Mult. by 10s
Area Models
Distributive Property
Solve
estimate
100

3x40=

120

100

use an area model to solve: 3X78=

234

100

What is the mult problem for :

(3x40)+(3x5)

3x45

100

Give the partial products for 4x288

800, 320, 32

100

estimate

5x 78

5x80=400

200

4x50=

200

200

Use  an area model to find 5x895=

4,475

200

Use the Distributive Prop. to Solve

5x87

(5x80)+(5x7)

400+35

435

200

Use any strategy

5x2,568=

12,840

200

estimate

6x 567

6x600=3,600

300

7x300=

2,100

300

Use an area model to find 6x1,487=

8,922

300

What is the mult prob for

(5x100)+(5x80)+(5x3)

5x 183

300

Give the partial products

3x2,432

6,000  1,200   90  6

300

estimate

4x3,456

4x3,000=12,000

400

8x500=

4,000

400

Use an area model to find 7x3,455=

24,185

400

Use Distributive to Solve

3x784

(3x700)+(3x80)+(3x4)=

2,100+240+12=

2,352

400

Solve using any strategy 4x 788

3,152

400

estimate

8x999

8x1,000=8,000

500

9x900=

8,100

500

Use an area model to find 9x2,550=

22,950

500

Give the mult problem

(9x400)+(9x50)+(9x4)

9x454

500

Solve using any strategy

6x4,589

27,534

500

estimate

7x 5,099

7 x 5,000=35,000