Addition and Subtraction

Front

What is addition?

Back

Addition is the mathematical operation of combining two or more numbers to get a total or sum.

Tags

CCSS.5.NBT.B.7

Front

What is subtraction?

Back

Subtraction is the mathematical operation of taking one number away from another to find the difference.

Tags

CCSS.2.NBT.B.7

Front

What is the sum of 81 and 18?

Back

The sum of 81 and 18 is 99.

Tags

CCSS.1.NBT.C.4

CCSS.2.NBT.B.5

Front

What is the difference between 78 and 55?

Back

The difference between 78 and 55 is 23.

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

Front

What is the difference between 66 and 31?

Back

The difference between 66 and 31 is 35.

Tags

CCSS.5.NBT.B.7

Front

What is 53 minus 40?

Back

53 minus 40 equals 13.

Tags

CCSS.7.NS.A.1C

Front

What is 75 minus 25?

Back

75 minus 25 equals 50.

Tags

CCSS.7.NS.A.1C

Front

How do you check your addition?

Back

To check your addition, you can subtract one of the addends from the sum to see if you get the other addend.

Tags

CCSS.1.OA.A.1

Front

How do you check your subtraction?

Back

To check your subtraction, you can add the difference to the subtracted number to see if you get the original number.

Tags

CCSS.1.OA.A.1

Front

What is a word problem in mathematics?

Back

A word problem is a mathematical problem that is presented in the form of a story or real-life scenario.

Tags

CCSS.1.OA.A.1