MATH - Review Unit 1

SIGNIFICANT FIGURES

100

How many significant figures are in the following number:

12345

5

200

How many significant figures are in the following number:

140.58

5

300

How many significant figures are in the following number:

101010.1

7

400

How many significant figures are in the following number:

34.10

4

500

How many significant figures are in the following number:

732900

4 (there is no bar above the zeros)

ROUNDING SIGNIFICANT FIGURES

100

Round the following to the indicated significant figures:

10432 to 3 significant figures

104000

200

Round the following to the indicated significant figures:

2.4983 to 3 significant figures

2.50

300

Round the following to the indicated significant figures:

0.006037736 to 2 significant figures

0.0060

400

Round the following number to 1 significant figure:

1.909

2

500

Round the following number to 3 significant figures:

63960

64000

SCIENTIFIC NOTATION

100

How do you write the following number in scientific notation:

3 x 100

3 x 10²

200

How do you write the following number in scientific notation:

4.5 x 10000

4.5 x 10⁴

300

How do you write the following number in scientific notation:

7 : 100

7 x 10^-2

400

How do you write the following number in scientific notation:

6.23 : 10³ 

6.23 : 10^-3

500

How do you write the following number in scientific notation:

777.7 x 10000

7.777 x 10⁶

EXPONENTS

100

Simplify the expression below (no need to calculate):

(2³ : 3²)³

2⁹/3⁶

200

Simplify:

(x^-3)^-2

x⁶

300

Simplify:

(u^x+3)³ : u^x+1

u^2x+8

400

Simplify:

x²z^-3 . (xz²)² 

x⁴z

500

Write as a power of 3:

3^m . 27^m . 9^-m

3^2m