Chapter 2 Math Vocab

unknown

• not known

• Any number being added.

• An approximation of a number based on reasonable assumptions

• the answer to a subtraction problem

Associative Property of Addition

• Changing the order of the addends does not change the sum.

• If you add zero to a number, the sum is the same as that number.

• Any number being added.

• Changing the grouping of three or more addends does not change the sum.

Tags

CCSS.1.OA.B.3

Commutative Property of Addition

• Any number being added.

• Changing the order of the addends does not change the sum.

• If you add zero to a number, the sum is the same as that number.

• Changing the grouping of three or more addends does not change the sum.

Tags

CCSS.1.OA.B.3

Identity Property of Addition

• Changing the grouping of three or more addends does not change the sum.

• Changing the order of the addends does not change the sum.

• If you add zero to a number, the sum is the same as that number.

• Any number being added.

Tags

CCSS.1.OA.B.3

addend

• A number from which another number is subtracted.

• A number that is subtracted.

• Any number being added.

• the answer to a subtraction problem

Tags

CCSS.5.OA.A.1

CCSS.5.OA.A.2

regroup

• to use place value to exchange equal amounts when renaming a number

• the answer to a subtraction problem

• A number from which another number is subtracted.

• A number that is subtracted.

Tags

CCSS.2.NBT.B.7

estimate

• A number that is subtracted.

• the answer to a subtraction problem

• An approximation of a number based on reasonable assumptions

• to use place value to exchange equal amounts when renaming a number

difference

• to use place value to exchange equal amounts when renaming a number

• An approximation of a number based on reasonable assumptions

• A number from which another number is subtracted.

• the answer to a subtraction problem

Tags

CCSS.2.NBT.B.7

minuend

• the answer to a subtraction problem

• A number from which another number is subtracted.

• the answer to a subtraction problem

• Any number being added.

subtrahend

• A number that is subtracted.

• the answer to a subtraction problem

• Any number being added.

• A number from which another number is subtracted.

Tags

CCSS.7.NS.A.1C