Chemistry Review Math 1

Significant Figures

100

How many significant figures is in 6.002?

4

200

How many significant figures is in 0.0025300

5

300

How many significant figures is in 900,000

6

400

How many significant figures is in 0.00803900

6

500

How many significant figures is in 8.037 x10³

4

Multiplication and Division

100

0.345 x 1.000

0.345

200

6.7 x 101 

680

300

3468 / 490

7.1

400

3.6 x 75 / 8 

2,000

500

(6.3 x 10³ )x (8 x 10⁵) 

5 x 10⁹

Addition and subtraction

100

3.1 - 0.1

3.0

200

25.45 + 36.1

61.6

300

10000 + 25.34 + 86.9

1000

400

8.00034 + 3.2 - 4.17 - 8.45

- 1.4

500

(1.09 x 10²) + (3.45 x 10³)

3.6 x 10³

Scientific Notation

100

4500

4.5 x 10²

200

0.00004

4 x 10 ^-5

300

108,000

1.08 x 10⁵

400

How many Km is 3.5 x 10³ m?

3.5 Km

500

1.689 x 10⁰

1