Topic 1 Review

Expanded Form

100

578,000

(5 X 10⁵) + (7 X 10⁴) + (8 X 10³) 

200

6,578

(6 x 10³) + (5 x 10²) + (7 x 10¹) + (8 X 1)

300

22.89

(2 x 10¹) + (2 x 1) + (8 x 1/10) + (9 X 1/100)

400

709,800.934

(7 x 10⁵) + (9 x 10³) + (9 X 1/10) + (3 X 1/100)   + (4 x 1/1000)

500

3,475.892

(3 x 10³) + (4 x 10²) + (7 x 10¹) + (5 X 1) + (8 x 1/10) + (9 x 1/100) +(2 x 1/1000)

Converting Decimals

100

.098

98/1000

200

98/100

.98

300

.8

8/10

400

.005

5/1000

500

47/1000

.047

Comparing Decimals

100

1,087.9    ______      10.879

>

200

89.12    ______       89.5

<

300

66.4   ______      66.399

>

400

7.8    ______       7.800

=

500

9.08 ___ 9.80

<

Rounding

100

Round to the nearest tenth.

75.873

75.9

200

Round to the nearest thousandth.

4.7532

4.753

300

Round to the nearest hundredth.

3,709.611

3,709.610

400

Round to the nearest whole number.

165.8

166

500

Round to the nearest whole number.

2,809.102

2,809

Mixed Bag

100

Find the Product 

43 X 10⁴

430,000

200

Put the decimals in order from least to greatest.

4.6, 4.06, 4.657, 4.400

4.06, 4.400, 4.6, 4.657

300

Write in word form

236.978

Two hundred thirty six and nine hundred seventy eight thousandths

400

Write in Standard Form

(5 x 10³) + (9 x 10²) + (7 x 10¹) + (2 x 1) + (4 x 1/100) + (7 x 1/1000)

5,972.047

500

The population of Chicago is about 14 x 10⁶. The population of Tampa is about 98 x 10⁴. Which city has a higher population?

Chicago