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STANDARD 4.1 (NUMBER AND NUMERICAL OPERATIONS) ALL STUDENTS WILL
DEVELOP NUMBER SENSE AND WILL PERFORM STANDARD NUMERICAL OPERATIONS AND
ESTIMATIONS ON ALL TYPES OF NUMBERS IN A VARIETY OF WAYS. |
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A.
Number Sense |
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By the end of Grade
2, students will: |
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1.
Use
real-life experiences, physical materials, and technology to construct
meanings for numbers (unless otherwise noted, all indicators for grade 2
pertain to these sets of numbers as well).
·
Whole
numbers through hundreds
·
Ordinals
·
Proper
fractions (denominators of 2, 3, 4, 8, 10) |
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2.
Demonstrate
an understanding of whole number place value concepts. |
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3.
Understand
that numbers have a variety of uses. |
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4.
Count and
perform simple computations with coins.
·
Amounts up
to $1.00 (using cents notation) |
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5.
Compare and
order whole numbers. |
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Building upon knowledge and
skills gained in preceding grades, by the end of Grade 3, students will: |
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1.
Use real-life experiences, physical materials, and
technology to construct meanings for numbers (unless otherwise noted,
all indicators for grade 3 pertain to these sets of numbers as well).
·
Whole numbers through hundred thousands
·
Commonly used fractions (denominators of 2, 3, 4, 5, 6, 8,
10) as part of a whole, as a subset of a set, and as a location on a
number line |
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2.
Demonstrate
an understanding of whole number place value concepts. |
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3.
Identify
whether any whole number is odd or even. |
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4.
Explore the extension of the place value system to
decimals through hundredths. |
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5.
Understand
the various uses of numbers.
·
Counting,
measuring, labeling (e.g., numbers on baseball uniforms) |
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6.
Compare and
order numbers. |
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Building upon knowledge and
skills gained in preceding grades, by the end of Grade 4, students will: |
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1.
Use
real-life experiences, physical materials, and technology to construct
meanings for numbers (unless otherwise noted, all indicators for grade 4
pertain to these sets of numbers as well).
·
Whole
numbers through millions
·
Commonly
used fractions (denominators of 2, 3, 4, 5, 6, 8, 10, 12, and 16) as
part of a whole, as a subset of a set, and as a location on a number
line
·
Decimals
through hundredths |
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2.
Demonstrate an understanding of place value concepts. |
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3.
Demonstrate
a sense of the relative magnitudes of numbers. |
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4.
Understand
the various uses of numbers.
·
Counting,
measuring, labeling (e.g., numbers on baseball uniforms), locating
(e.g., Room 235 is on the second floor) |
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5.
Use concrete
and pictorial models to relate whole numbers, commonly used fractions,
and decimals to each other, and to represent equivalent forms of the
same number. |
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6.
Compare and order numbers. |
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7.
Explore
settings that give rise to negative numbers.
·
Temperatures
below 0o, debts
·
Extension of
the number line |
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Building upon knowledge and
skills gained in preceding grades, by the end of Grade 5, students will: |
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1.
Use
real-life experiences, physical materials, and technology to construct
meanings for numbers (unless otherwise noted, all indicators for grade 5
pertain to these sets of numbers as well).
·
All
fractions as part of a whole, as subset of a set, as a location on a
number line, and as divisions of whole numbers
·
All decimals
|
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2.
Recognize
the decimal nature of United States currency and compute with money. |
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3.
Demonstrate
a sense of the relative magnitudes of numbers. |
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4.
Use whole
numbers, fractions, and decimals to represent equivalent forms of the
same number. |
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5.
Develop and
apply number theory concepts in problem solving situations.
·
Primes,
factors, multiples |
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6.
Compare and
order numbers. |
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Building upon
knowledge and skills gained in preceding grades, by the end of Grade 6,
students will: |
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1.
Use
real-life experiences, physical materials, and technology to construct
meanings for numbers (unless otherwise noted, all indicators for grade 6
pertain to these sets of numbers as well).
·
All integers
·
All
fractions as part of a whole, as subset of a set, as a location on a
number line, and as divisions of whole numbers
·
All decimals
|
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2.
Recognize the decimal nature of United States currency and
compute with money. |
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3.
Demonstrate
a sense of the relative magnitudes of numbers. |
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4.
Explore the use of ratios and proportions in a variety of
situations. |
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5.
Understand and use whole-number percents between 1 and 100
in a variety of situations. |
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6.
Use whole numbers, fractions, and decimals to represent
equivalent forms of the same number. |
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7.
Develop and
apply number theory concepts in problem solving situations.
·
Primes,
factors, multiples
·
Common
multiples, common factors |
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8.
Compare and
order numbers. |
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Building upon knowledge and
skills gained in preceding grades, by the end of Grade 7, students will: |
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1.
Extend understanding of the number system by constructing
meanings for the following (unless otherwise noted, all indicators for
grade 7 pertain to these sets of numbers as well):
·
Rational numbers
·
Percents
·
Whole numbers with exponents |
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2.
Demonstrate a sense of the relative magnitudes of numbers. |
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3.
Understand
and use ratios, proportions, and percents (including percents greater
than 100 and less than 1) in a variety of situations. |
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4.
Compare and order numbers of all named types. |
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5.
Use whole numbers, fractions, decimals, and percents to
represent equivalent forms of the same number. |
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6.
Understand
that all fractions can be represented as repeating or terminating
decimals. |
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Building upon knowledge and
skills gained in preceding grades, by the end of Grade 8, students will: |
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1.
Extend
understanding of the number system by constructing meanings for the
following (unless otherwise noted, all indicators for grade 8 pertain to
these sets of numbers as well):
·
Rational
numbers
·
Percents
·
Exponents
·
Roots
·
Absolute
values
·
Numbers
represented in scientific notation |
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2.
Demonstrate a sense of the relative magnitudes of numbers. |
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3.
Understand
and use ratios, proportions, and percents (including percents greater
than 100 and less than 1) in a variety of situations. |
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4.
Compare and
order numbers of all named types. |
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5.
Use whole
numbers, fractions, decimals, and percents to represent equivalent forms
of the same number. |
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6.
Recognize
that repeating decimals correspond to fractions and determine their
fractional equivalents.
·
5/7 = 0.
714285714285… = 0.  |
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7.
Construct meanings
for common irrational numbers, such as
p
(pi) and the square root of 2. |
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Building upon
knowledge and skills gained in preceding grades, by the end of Grade 12,
students will: |
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1.
Extend
understanding of the number system to all real numbers. |
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2.
Compare and order rational and irrational numbers. |
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3.
Develop
conjectures and informal proofs of properties of number systems and sets
of numbers. |
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B.
Numerical Operations |
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By the end of Grade
2, students will: |
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1.
Develop the
meanings of addition and subtraction by concretely modeling and
discussing a large variety of problems.
·
Joining,
separating, and comparing |
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2.
Explore the meanings of multiplication and division by
modeling and discussing problems. |
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3.
Develop
proficiency with basic addition and subtraction number facts using a
variety of fact strategies (such as “counting on” and “near doubles”)
and then commit them to memory. |
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4.
Construct,
use, and explain procedures for performing addition and subtraction
calculations with:
·
Pencil-and-paper
·
Mental math
·
Calculator |
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5.
Use efficient and
accurate pencil-and-paper procedures for computation with whole numbers.
·
Addition of 2-digit numbers
·
Subtraction of 2-digit numbers |
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6.
Select
pencil-and-paper, mental math, or a calculator as the appropriate
computational method in a given situation depending on the context and
numbers. |
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7.
Check the reasonableness of results of computations. |
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8.
Understand
and use the inverse relationship between addition and subtraction. |
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Building upon knowledge and
skills gained in preceding grades, by the end of Grade 3, students will: |
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1.
Develop the
meanings of the four basic arithmetic operations by modeling and
discussing a large variety of problems.
·
Addition and
subtraction: joining, separating, comparing
·
Multiplication: repeated addition, area/array
·
Division:
repeated subtraction, sharing |
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2.
Develop proficiency with basic multiplication and division
number facts using a variety of fact strategies (such as “skip counting”
and “repeated subtraction”). |
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3.
Construct, use, and explain procedures for performing
whole number calculations with:
·
Pencil-and-paper
·
Mental math
·
Calculator |
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4.
Use efficient and
accurate pencil-and-paper procedures for computation with whole numbers.
·
Addition of 3-digit numbers
·
Subtraction of 3-digit numbers
·
Multiplication of 2-digit numbers by 1-digit numbers |
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5.
Count and perform simple computations with money.
·
Cents notation (˘) |
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6.
Select pencil-and-paper, mental math, or a calculator as
the appropriate computational method in a given situation depending on
the context and numbers. |
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7.
Check the reasonableness of results of computations. |
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Building upon knowledge and
skills gained in preceding grades, by the end of Grade 4, students will: |
| |
1.
Develop the
meanings of the four basic arithmetic operations by modeling and
discussing a large variety of problems.
·
Addition and
subtraction: joining, separating, comparing
·
Multiplication: repeated addition, area/array
·
Division:
repeated subtraction, sharing |
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2.
Develop proficiency with basic multiplication and division
number facts using a variety of fact strategies (such as “skip counting”
and “repeated subtraction”) and then commit them to memory. |
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3.
Construct,
use, and explain procedures for performing whole number calculations and
with:
·
Pencil-and-paper
·
Mental math
·
Calculator |
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4.
Use efficient and accurate pencil-and-paper procedures for
computation with whole numbers.
·
Addition of 3-digit numbers
·
Subtraction of 3-digit numbers
·
Multiplication of 2-digit numbers
·
Division of 3-digit numbers by 1-digit numbers |
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5.
Construct and use procedures for performing decimal
addition and subtraction. |
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6.
Count and
perform simple computations with money.
·
Standard
dollars and cents notation |
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7.
Select
pencil-and-paper, mental math, or a calculator as the appropriate
computational method in a given situation depending on the context and
numbers. |
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8.
Check the
reasonableness of results of computations. |
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9.
Use concrete
models to explore addition and subtraction with fractions. |
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10.
Understand
and use the inverse relationships between addition and subtraction and
between multiplication and division. |
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Building upon knowledge and
skills gained in preceding grades, by the end of Grade 5, students will: |
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1.
Recognize
the appropriate use of each arithmetic operation in problem situations. |
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2.
Construct,
use, and explain procedures for performing addition and subtraction with
fractions and decimals with:
·
Pencil-and-paper
·
Mental math
·
Calculator |
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3.
Use an
efficient and accurate pencil-and-paper procedure for division of a
3-digit number by a 2-digit number. |
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|
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5.
Check the
reasonableness of results of computations. |
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6.
Understand
and use the various relationships among operations and properties of
operations. |
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Building upon
knowledge and skills gained in preceding grades, by the end of Grade 6,
students will: |
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1.
Recognize the appropriate use of each arithmetic operation
in problem situations. |
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2.
Construct,
use, and explain procedures for performing calculations with fractions
and decimals with:
·
Pencil-and-paper
·
Mental math
·
Calculator |
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3.
Use an efficient and accurate pencil-and-paper procedure
for division of a 3-digit number by a 2-digit number. |
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4.
Select
pencil-and-paper, mental math, or a calculator as the appropriate
computational method in a given situation depending on the context and
numbers. |
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5.
Find squares
and cubes of whole numbers. |
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6.
Check the reasonableness of results of computations. |
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7.
Understand and use the various relationships among
operations and properties of operations. |
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8.
Understand and
apply the standard algebraic order of operations for the four basic
operations, including appropriate use of parentheses. |
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Building upon knowledge and
skills gained in preceding grades, by the end of Grade 7, students will: |
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1.
Use and
explain procedures for performing calculations with integers and all
number types named above with:
·
Pencil-and-paper
·
Mental math
·
Calculator |
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2.
Use
exponentiation to find whole number powers of numbers. |
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3.
Understand and apply the standard
algebraic order of operations, including appropriate use of parentheses. |
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Building upon knowledge and
skills gained in preceding grades, by the end of Grade 8, students will: |
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1.
Use and
explain procedures for performing calculations involving addition,
subtraction, multiplication, division, and exponentiation with integers
and all number types named above with:
·
Pencil-and-paper
·
Mental math
·
Calculator |
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2.
Use
exponentiation to find whole number powers of numbers. |
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3.
Find square
and cube roots of numbers and understand the inverse nature of powers
and roots. |
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4.
Solve
problems involving proportions and percents. |
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5.
Understand
and apply the standard algebraic order of operations, including
appropriate use of parentheses. |
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Building upon
knowledge and skills gained in preceding grades, by the end of Grade 12,
students will: |
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1.
Extend
understanding and use of operations to real numbers and algebraic
procedures. |
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2.
Develop,
apply, and explain methods for solving problems involving rational and
negative exponents. |
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3.
Perform
operations on matrices.
·
Addition and
subtraction
·
Scalar
multiplication |
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4.
Understand
and apply the laws of exponents to simplify expressions involving
numbers raised to power |
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C.
Estimation |
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By the end of Grade
2, students will: |
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1.
Judge
without counting whether a set of objects has less than, more than, or
the same number of objects as a reference set. |
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2.
Determine
the reasonableness of an answer by estimating the result of computations
(e.g., 15 + 16 is not 211). |
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3.
Explore a
variety of strategies for estimating both quantities (e.g., the number
of marbles in a jar) and results of computation. |
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Building upon knowledge and
skills gained in preceding grades, by the end of Grade 3, students will: |
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1.
Judge without counting
whether a set of objects has less than, more than, or the same number of
objects as a reference set. |
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2.
Construct
and use a variety of estimation strategies (e.g., rounding and mental
math) for estimating both quantities and the result of computations. |
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3.
Recognize
when an estimate is appropriate, and understand the usefulness of an
estimate as distinct from an exact answer. |
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4.
Use estimation to determine whether the result of a
computation (either by calculator or by hand) is reasonable. |
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Building upon knowledge and
skills gained in preceding grades, by the end of Grade 4, st |