Addition subtraction strategies

Which equation has the same total as 64 + 24?

• 60 + 20 + 4 + 4 = 88

• 60 + 40 + 2 + 4 = 106

• 60 + 20 + 2 + 4 = 86

• 70 + 20 + 3 + 3 = 96

What number goes in the blank?

10 - ____ = 6

6 + _____ = 10

• 4

• 5

• 6

• 10

What number is missing?

4000 + 300 + ___ + 2 = 4,362

• 2

• 60

• 3

• 40

What number goes on the line?

900 + 80 + ____ = 986

• 6

• 8

• 9

• 60

Choose the question that give  you 15

• 11 - 1 + 5

• 20 - 10 + 10

• 10 + 6

• 19 - 8

A part is missing in the equations. Find the missing part.

4 + ______ = 7

7 – 4 = ______

• 11

• 2

• 12

• 3

Which two related addition facts can help you solve 13 – 7?

• 7 + 6 = 13

• 7 + 13 =20

• 6 + 7 = 13

• 6 + 1 = 7

• 7 + 9 = 16

Mark subtracted 842 − 63 like this. Is Mark correct?

• Mark's answer is correct. He set up the problem the right way.

• Mark's answer is not correct. He set up the problem right but subtracted wrong

• Mark's answer is correct, but he set up the problem wrong.

• Mark's answer is not correct, because he set up the problem wrong.

What is 10 less than 84?

• 80

• 74

• 84

• 70

What is 10 less than 70?

• 30

• 40

• 50

• 60