Multiply with Tens
Estimate Products
Relate Area Models and Partial Products
Multiply with Regrouping
100

40 x 23

920

100

Estimate the product of 34 x 76 using front end estimation

2,100

100

Solve 81 x 60 using the box method 

4,860

100

Solve 33 x 44 using regrouping 

1,452

200

90 x 78

7,020

200

Estimate the product of 35 x 65 using rounding 

2,800

200

Solve 62 x 54 using the box method 

3,348

200

Solve 89 x 93 using regrouping 

8,277

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