Multiplying Using Area Model

What partial product goes in area A in this area model?

Tags

CCSS.4.NBT.B.5

Use area model or partial product to solve: 81 x 25

• 2000

• 2,025

• 1,040

Tags

CCSS.4.NBT.B.5

What partial product matches each letter?

• A=250 B=100 C=630 D=18

• A=3,500 B=100 C=540 D=18

• A=3,500 B=100 C=630 D=18

Tags

CCSS.4.NBT.B.5

Eric makes this model to multiply 67 x 83. He makes a mistake. What is Eric's mistake?

• 60 x 80 = 4,800

• 7 x 80 = 560

• 60 x 3 = 18

• 7 x 3 = 21

Tags

CCSS.4.NBT.B.5

If you were multiplying 678 x 29, how would you break apart 29 in this area model?

• 2 + 9

• 2 x 90

• 20 + 9

• 20 + 90

Tags

CCSS.4.NBT.B.5

Fill in the missing pieces of the generic rectangle and then find the total area.

b

c

d

e

a

14

2100

2664

490

60

Tags

CCSS.4.NBT.B.5

What partial product goes in area C?

• 24

• 27

• 36

• 40

Tags

CCSS.4.NBT.B.5

What goes in the box with the question mark?

• 40 x 5

• 30 x 6

• 6 x 40

• 5 x 6

Tags

CCSS.4.NBT.B.5

Jack Frost is working on some math calculations while he waits for the first big snow. What problem is he trying to solve with this area model?

• 764x2

• 382x2

• 600x2

• 300,802x2

Tags

CCSS.4.NBT.B.5

Dasher is trying to figure out some last minute calculations before they hitch up the sleigh. He has drawn the following area model. What partial product is missing?

• 120

• 12

• 1,200

• 2,400

Tags

CCSS.4.NBT.B.5