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Grade |
Number Sense, Properties, and Operations |
4 |
8 |
12 |
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1. |
Relate counting, grouping, and place value |
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a. Use place value to model and describe whole numbers
and
decimals |
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b. Use scientific notation in meaningful contexts |
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2. |
Represent numbers and operations in a variety of equivalent forms using models, diagrams, and symbols |
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a. Model numbers using set models such as counters |
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b. Model numbers using number lines |
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c. Use two- and three-dimensional region models to
describe
numbers |
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d. Use other models appropriate to a given situation (for example,
draw diagrams to represent a number or an
operation; write a
number sentence to fit a situation or describe
a situation to fit a
number sentence; interpret calculator or computer
displays) |
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e. Read, write, rename, order, and compare numbers |
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3. |
Compute with numbers (that is, add, subtract, multiply, divide) |
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a. Apply basic properties of operations |
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b. Describe effect of operations on size and order of numbers |
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c. Describe features of algorithms (such as regrouping with or
without manipulatives, partial products) |
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d. Select appropriate computation method (such as pencil and
paper, calculator, mental arithmetic) |
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4. |
Use computation and estimation in applications |
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a. Round whole numbers, decimals, and fractions in meaningful
contexts |
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b. Make estimates appropriate to a given situation |
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i. Know when to estimate |
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ii. Select appropriate type of estimate (overestimate, underestimate, range of estimate) |
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iii. Describe order of magnitude (estimation related to place value, scientific notation) |
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c. Select appropriate method of estimation (such as front end,
rounding) |
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d. Solve application problems involving answers or estimates as
appropriate |
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e. Interpret round-off errors using calculators/computers (that is,
truncating) |
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f. Verify solutions and determine the reasonableness of results |
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i. In real-world situations |
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ii. In abstract settings |
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5. |
Apply ratios and proportional thinking in a variety of situations |
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a. Use ratios to describe situations |
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b. Use proportions to model problems |
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c. Use proportional thinking to solve problems (including rates,
scaling, and similarity) |
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d. Understand the meaning of percentage (including percentages
greater than 100 and less than 1) |
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e. Solve problems involving percentages |
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6. |
Use elementary number theory |
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a. Describe odd and even numbers and their characteristics |
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b. Describe number patterns |
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c. Use factors and multiples to model and solve problems |
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d. Describe prime numbers |
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e. Use divisibility and remainders in problem settings (including
simple modular arithmetic) |
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