adding and subtracting

How many tens are in 42 ?

• 40

• 20

• 2 Tens

• 4 Tens

80-10=

• 17

• 70

• 19

• 90

60 - 10 = _______

• 40

• 50

• 30

• 20

50 - 10 = ______

• 40

• 30

• 60

• 14

40 - 20 = _____

• 10

• 20

• 30

What is ten less than 70?

• 17

• 60

• 40

• 27

• 0

• 3

• 30

• 60

I have a pack of 30 cookies and then eat 10. How many cookies are left?

• 12

• 20

• 10

• 30

50 - 30 = ______

• 20

• 25

• 30

• 35

• 12

• 62

• 70

• 7