Addition & Subtraction Strategies to 20

Front

What is addition?

Back

Addition is the process of finding the total or sum by combining two or more numbers.

Tags

CCSS.1.OA.A.1

Front

What is subtraction?

Back

Subtraction is the process of finding the difference between two numbers by taking one number away from another.

Tags

CCSS.2.OA.A.1

Front

What is the sum of 5 and 5?

Back

10

Tags

CCSS.2.OA.C.3

Front

What is the difference between 5 and 2?

Back

3

Tags

CCSS.1.OA.C.6

Front

What does it mean to count on?

Back

Counting on means starting from a number and adding more to it, like starting from 4 and counting up to 7.

Tags

CCSS.1.OA.C.6

Front

What is the result of 8 - 3?

Back

5

Tags

CCSS.1.OA.C.6

Front

What is the result of 5 + 6?

Back

11

Tags

CCSS.1.OA.C.6

CCSS.2.OA.B.2

Front

What is a number line?

Back

A number line is a straight line with numbers placed at equal intervals, used to represent numbers visually.

Tags

CCSS.2.MD.B.6

Front

What is the term for the answer in addition?

Back

The answer in addition is called the sum.

Tags

CCSS.6.EE.A.1

Front

What is the term for the answer in subtraction?

Back

The answer in subtraction is called the difference.