Adding and subtracting Tens

Front

70 + 10 = ?

Back

80

Tags

CCSS.2.NBT.B.5

Front

30 - 20 = ?

Back

10

Tags

CCSS.2.OA.A.1

Front

80 - 20 = ?

Back

60

Tags

CCSS.1.NBT.C.5

Front

30 + 30 = ?

Back

60

Tags

CCSS.2.NBT.B.5

Front

70 - 70 = ?

Back

0

Tags

CCSS.1.OA.B.3

Front

What is adding?

Back

Adding means putting together two or more numbers to find the total.

Tags

CCSS.1.OA.A.1

Front

What is subtracting?

Back

Subtracting means taking one number away from another.

Tags

CCSS.2.NBT.B.7

Front

What is a ten?

Back

A ten is a number that is equal to 10 units.

Tags

CCSS.1.NBT.B.2B

CCSS.1.NBT.B.2C

Front

What is the sum of 20 and 30?

Back

50

Tags

CCSS.2.NBT.B.5

Front

What is the difference between 50 and 20?

Back

30

Tags

CCSS.1.NBT.C.5