Topic 5

True or False?

100

95.6 -: 10^3 = .956

Not correct - the answer should be .0596 because you have to move the decimal 3 places to the left.

200

345.8 -: 10^2 = 3.458

The answer is correct.

300

Consider the number 5,258.9

To divide the number by 1,000 move the decimal two places he left.

False - move three places to the left.

400

Consider the number 257.85

To multiply the number by 100 move the decimal two places to the left.

False - move the decimal two places to the right.

500

89 -: 10^3 = 89 -: 10 -:10 -: 10

True

Powers of Ten

100

55.4 -: 10^3

.0554

200

359.45 -:10^2

3.5945

300

44.532 -: 10^0

44.532

400

548 x 10^2

54,800

500

4,565 -: 10^3

4.565

Whole Number Division

100

2.4 -: 2

1.2

200

30.5 -: 5

6.1

300

30.45 -: 15 

2.3

400

2.504 -: 12

.208 r8

500

Rob buys 6 tickets to the basketball game. He pays $8.50 for parking. His total cost is $8.50 for parking. His total cost is $40.54. What is the cost of each ticket?

$5.34

Find the Value

100

n -: 10^2 = 3.25

325

200

n -: 10^3 = 458.7 

458,700 

300

6.548 -: n = 6.548

10⁰

400

458 -: n = 4.58

10²

500

458.256 -: n = 4.58256

10²

Decimal Division

100

4.52 -: .2

2.26

200

0.36 -: 0.12 

3

300

10.81 -: 2.3

4.7

400

6.3 -: .7

9

500

Penny makes 6 liters of applesauce. She saves 0.56 liter for dinner and puts the rest in jars.  If each jar holds 0.68 liter, how many jars can she fill?

8 jars

Write Zeros in the Dividend

100

2.24 -: 0.35

6.4

200

20 -: 1.6

12.5

300

40 -: 16

2.5

400

2.24 -: 0.35

6.4

500

Hiro's family lives 448 kilometers from the beach.  Each of the 5 adults drove the family van an equal distance to get to and from the beach.  How far did the family drive?

179.2 kilometers