Doubling and Halving Multiplication Strategy

What is half of 60?

• 20

• 15

• 30

Tags

CCSS.4.NF.B.4B

CCSS.4.NF.B.4C

Can you double 26?

• 15

• 13

• 12

Tags

CCSS.5.OA.B.3

What is half of 88?

• 44

• 25

• 62

Can you double 70?

• 90

• 72

• 140

Tags

CCSS.5.OA.B.3

Now half the number 12 and double the number 30. If you multiply them what is the answer?

• 320

• 240

• 360

Tags

CCSS.6.EE.A.1

Can you multiply 14 x 24 using the halving and doubling strategy?

• 336

• 226

• 300

Tags

CCSS.5.NBT.B.5

Multiply 45 x 18 =

• 728

• 456

• 810

Tags

CCSS.4.NBT.B.5

25 x 16 =

• 450

• 400

• 360

Tags

CCSS.4.NBT.B.5