Add and Subtract
2.0 Students understand and describe simple additions and subtractions:
2.1 Use concrete objects to determine the answers to addition and subtraction
problems (for two numbers that are each less than 10).
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Add and Subtract
2.0 Students demonstrate the meaning of addition and subtraction and use these
operations to solve problems:
2.1 Know the addition facts (sums to 20) and the corresponding subtraction facts and
commit them to memory.
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Add and Subtract
2.2 *4 Find the sum or difference of two whole numbers up to three digits long.
2.3 Use mental arithmetic to find the sum or difference of two two-digit numbers.
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2.0 Students calculate and solve problems involving addition, subtraction,
multiplication, and division:
2.1Find the sum or difference of two whole numbers between 0 and 10,000.
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Add and Subtract
2.0 Students extend their use and understanding of whole numbers to the addition and subtraction of simple decimals:
2.1 *1 Estimate and compute the sum or difference of whole numbers and positive decimals to two places.
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3.0 Students solve problems involving addition, subtraction, multiplication, and division of whole numbers and understand the relationships among the operations:
3.1 *3 Demonstrate an understanding of, and the ability to use, standard algorithms for the addition and subtraction of multidigit numbers.
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