Mastering Addition and Subtraction

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 taking one number away from another.

Tags

CCSS.2.NBT.B.7

Front

Back

80

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

Front

Back

700

Tags

CCSS.2.NBT.B.8

Front

Back

100

Tags

CCSS.2.NBT.B.5

Front

Back

92

Tags

CCSS.1.NBT.C.4

CCSS.2.NBT.B.5

Front

Back

100

Tags

CCSS.2.NBT.B.5

Front

What does it mean to 'mentally calculate'?

Back

Mentally calculating means solving a math problem in your head without writing it down.

Tags

CCSS.1.OA.A.1

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 a 'word problem' in math?

Back

A word problem is a math problem that is written in the form of a story or sentence.

Tags

CCSS.2.OA.A.1