Addition and Subtraction Strategies

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

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

4 + ______ = 7

7 – 4 = ______

• 11

• 2

• 12

• 3

Tags

CCSS.2.NBT.B.5

Choose the question that give  you 15

• 11 - 1 + 5

• 20 - 10 + 10

• 10 + 6

• 19 - 8

Tags

CCSS.5.OA.A.1

CCSS.5.OA.A.2

What number goes on the line?

900 + 80 + ____ = 986

• 6

• 8

• 9

• 60

Tags

CCSS.2.NBT.A.3

What number is missing?

4000 + 300 + ___ + 2 = 4,362

• 2

• 60

• 3

• 40

Tags

CCSS.4.NBT.A.2

What number goes in the blank?

10 - ____ = 6

6 + _____ = 10

• 4

• 5

• 6

• 10

Tags

CCSS.1.OA.A.1

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

Tags

CCSS.2.NBT.B.5

What does 85 - 39 equal?

• 44

• 46

• 54

• 56

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

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.

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

Sal is subtracting 273 from 368 using base ten blocks. What does he need to do after subtracting the ones?

• Trade 1 hundred for 10 tens.

• Trade 6 tens for 60 ones.

• Trade 2 hundreds for 20 tens

• Trade 1 ten for 10 ones.

Tags

CCSS.7.NS.A.1C