Multiples 10 and 100
Rounding to Estimate
Partial Products
Multiply Larger Numbers
Area Model
100

8 X 60 =

480

100

Estimate

8 x 783

6,400

100

75 x 5 =

375

100

7 x 45

315

100

6 x 374 =

2,244

200

5 x 300 =

1,500

200

Estimate

937 x 5 

4,500

200

253 x 4 =

1,012

200

5 x 95 =

475

200

8 x 56 =

448

300

700 x 4 = 

2,800

300

Estimate

707 x 4

2,800

300

214 x 7

1,498

300

4 x 865 =

3,460

300

5 x 258 =

1,290

400

5 x 800 =

4,000

400

Estimate

4 x 146

400

400

341 x 7 =

2,387

400

371 x 8 =

2,968

400

3 x 809 =

2,427

500

4 x 60 tens

2,400

500

Estimate

6 x 816

4,800

500

326 x 9 =

2,934

500

720 x 6 =

4,320

500

2 x 542 =

1,084

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