Eighth Grade Ch. 1 Review

Decimal Equivalents (NOT ON TEST)

100

1 / 4

0.25

200

6/10

0.6

300

150/1,000

0.15

400

17/85

0.2

500

75/25

3

Exponent Rules(NOT ON TEST)

100

(7²)² 

7⁴

200

2³ _x 2⁶     

2⁹

300

45^20.   /    45¹⁹

45¹

^Or

45

400

Make the exponent positive...

4^-3

1/4³

500

Make the exponent positive 1^-4  

1/1⁴

Write in expanded form (the long way)

100

4 x 10⁴

40,000

200

4 x 10^-4

0.0004

300

3.45 x 10¹¹

345,000,000,000

400

3.14159265 x 10³

3,141.59265

500

1.23456789 x 10^-10

0.000000000123456789

Write in scientific notation ( x 10)

100

11

1.1 x 10¹

200

0.234

2.34 x 10^-1

300

1,239,234,000

1.239234 x 10⁹

400

0.00189

1.89 x 10^-3

500

0.00001000100013

1.000100013 x 10^-5

Is it scientific notation?

100

35.2 x 10³

No.

200

1.231 x 10⁴

Yes

300

0.99 x 10^-2

No

400

1 x 10⁴

Yes

500

12,000 x 10⁸¹

No