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Grade Level:
5
Subject:
Math
Topic:
subtracting using regrouping review and refresher after Christmas Break
Objective:
Students should be able to determine when regrouping is called for. Students should be able to determine place values up to 1000 and understand the concept of 10 times. They should understand the importance of ten times and its role in regrouping in subtraction.
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Math.5.NBT.1 Recognize that in a multi-digit number, a digit in one place represents 10 times as much as it represents in the place to its right and 1/10 of what it represents in the place to its left. Math.5.NBT.7 Add, subtract, multiply, and divide decimals to hundredths, using concrete models or drawings and strategies based on place value, properties of operations, and/or the relationship between addition and subtraction; relate the strategy to a written method and explain the reasoning used.
Math.2.NBT.7 Add and subtract within 1000, using concrete models or drawings and strategies based on place value, properties of operations, and/or the relationship between addition and subtraction; relate the strategy to a written method. Understand that in adding or subtracting three- digit numbers, one adds or subtracts hundreds and hundreds, tens and tens, ones and ones; and sometimes it is necessary to compose or decompose tens or hundreds.
Math.2.NBT.9 Explain why addition and subtraction strategies work, using place value and the properties of operations.
