3rd: Addition/Subtraction Math Vocabulary

the answer to an addition problem

• Sum

• Difference

• Addend

• Regroup

Tags

CCSS.K.OA.A.1

CCSS.K.OA.A.2

the answer to an subtraction problem

• Sum

• Difference

• Addend

• Regroup

Tags

CCSS.3.NBT.A.2

CCSS.3.OA.D.8

numbers being added together

• Sum

• Difference

• Addend

• Regroup

Tags

CCSS.2.NBT.B.5

CCSS.2.OA.A.1

CCSS.2.OA.B.2

rearranging numbers into groups of tens (or other place values) to make addition and subtraction easier

• Sum

• Difference

• Addend

• Regroup

Tags

CCSS.2.NBT.B.5

CCSS.2.NBT.B.6

CCSS.2.NBT.B.7

undoes each others operations; Subtraction undoes addition, Addition undoes subtraction

• Inverse Operation

• Commutative Property of Addition

• Associative Property of Addition

• Estimate

Tags

CCSS.2.NBT.B.5

CCSS.2.NBT.B.7

CCSS.2.NBT.B.9

Changing the ORDER of numbers when you add to make addition easier while still getting the same sum.

• Inverse Operation

• Commutative Property of Addition

• Associative Property of Addition

• Estimate

Tags

CCSS.2.NBT.B.5

CCSS.2.NBT.B.9

changing the GROUPING of numbers when you add to make addition easier while still getting the same sum

• Inverse Operation

• Commutative Property of Addition

• Associative Property of Addition

• Compatible Numbers

Tags

CCSS.2.NBT.B.5

CCSS.2.NBT.B.9

When you find an answer close to the actual answer, can be done by using rounding and using compatible numbers

• Inverse Operation

• Commutative Property of Addition

• Associative Property of Addition

• Estimate

Tags

CCSS.4.NBT.A.3

CCSS.4.OA.A.3

are easier numbers picked to work with than the actual numbers to work out in an equation

• Inverse Operation

• Commutative Property of Addition

• Associative Property of Addition

• Compatible Numbers

Tags

CCSS.2.NBT.B.9

Which of the numbers in the equation represents the SUM: 23+45=68

Tags

CCSS.2.NBT.B.5

CCSS.2.NBT.B.6