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    Explain equivalence of fractions in special cases, and compare fractions by reasoning about their size.

     
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    Understand a fraction 1/b as the quantity formed by 1 part when a whole is partitioned into b equal parts; understand a fraction a/b as the quantity formed by a parts of size 1/b.

     
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    5.NBT.5

    Fluently multiply multi-digit whole numbers using the standard algorithm.

     
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    Solve word problems that call for addition of three whole numbers whose sum is less than or equal to 20, e.g., by using objects, drawings, and equations with a symbol for the unknown number to represent the problem.

    Apply properties of operations as strategies to add and subtract.2 Examples: If 8 + 3 = 11 is known, then 3 + 8 = 11 is also known. (Commutative property of addition.) To add 2 + 6 + 4, the second two numbers can be added to make a ten, so 2 + 6 + 4 = 2 + 10 = 12. (Associative property of addition.)

     
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    Fluently add and subtract multi-digit whole numbers using the standard algorithm.

     
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    Fluently add and subtract multi-digit whole numbers using the standard algorithm.

     
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    Multiply a whole number of up to four digits by a one-digit whole number, and multiply two two-digit numbers, using strategies based on place value and the properties of operations. Illustrate and explain the calculation by using equations, rectangular arrays, and/or area models.

     
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    Fluently add and subtract multi-digit whole numbers using the standard algorithm.

     
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    Fluently add and subtract multi-digit whole numbers using the standard algorithm.

     
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    Fluently add and subtract multi-digit whole numbers using the standard algorithm.