Addition and Subtraction 2 Digit Whole Numbers

The answer to an addition problem.

• sum

• difference

• product

• quotient

-2 + 6 =

• 4

• -4

• 8

• -8

Tags

CCSS.7.NS.A.1C

a number that is added to another.

• rational number

• opposite

• inverse

• addend

Tags

CCSS.7.NS.A.1B

Sets of addition and subtraction facts or multiplication and division facts that have the same numbers.

2 + 3 = 5

3 + 2 = 5

5 - 2 = 3

5 - 3 = 2

• factor

• equation

• addition

• related facts

Tags

CCSS.2.NBT.B.5

Pairs of numbers that are easy to work with; for example,

340 + 160 are easier to add because 40 + 60 = 100

• place value estimation

• front-end rounding

• compatible numbers

• compensation

Tags

CCSS.2.NBT.B.7

A strategy for estimating; rounding one number up and rounding the other number down when the numbers are added.

• place value estimation

• front-end rounding

• compatible numbers

• compensation

Tags

CCSS.5.OA.A.1

CCSS.5.OA.A.2

the answer to an addition problem

• multiple

• sum

• factor

• difference

Tags

CCSS.1.OA.D.8