Multiplying By Powers of 10
Estimation
Drawing Bar Diagrams
Multiply
100

6,471 x 101

64,710

100

Estimate the product:

7 x 396

2,800

100

The length of James's pool is 16 feet. The length of the pool at Wing Park is 4 times as long. How long is the pool at Wing Park?


Write an equation to represent this problem and solve

16 x 4 = p

p= 64 feet

100

343 x 5

1,715

200

100 x 815

81,500

200

Estimate the product:

17 x 63

1,200

200

The length of James's pool is 16 feet. The length of the pool at Wing Park is 4 times as long. How long is the pool at Wing Park?

Draw a bar diagram to represent this problem. Use the variable P.

See Diagram

200

893 x 7

6,251

300

12 x 104

120,000

300

Estimate the product:

45 x 806

40,000

300

Alexandria has a collection of 34 dolls. A toy store has 15 times as many dolls as Alexandria. How many dolls are in the store?

Write and equation with the variable d. and solve.

34 x 15 = d

510 dolls

300

47 x 302

14,194

400

890 x 103

890,000

400

Estimate the product:

91 x 51

4,500

400

Alexandria has a collection of 34 dolls. A toy store has 15 times as many dolls as Alexandria. How many dolls are in the store?

Draw a bar diagram to represent the problem.

See Diagram

400

32 x 871

27,872

500

400 x 106

400,000,000

500

Estimate the product:

78 x 47

4,000

500

A store received a shipment of 35 TV's valued at $625 each. What is the total value of the shipment.

Write an equation with the variable T, solve, and draw a bar diagram

37 x 625 = t

t = $23,125

See Diagram

500

89 x 27

2,403

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