Math 2 Review- Unit 1

Fractions/decimals

100

What is 1/5 as a decimal?

0.2

200

What is .03 as a fraction?

3/100

300

Write 2.5 as a fraction.

2 5/10

400

What is 3 7/8 as a decimal 

3.875

500

What is 20/3 as a decimal?

6.666666.....

Exponents

100

What is 10 x 10x 10 x10 as an exponent?

10⁴

200

What does 5⁴  equal?

5 x 5 x 5 x 5 

or 625

300

What is 3x²  when x =4?

48

400

What is 4⁰ + 3¹=

4

500

What is x³ + 5^x=  

when x is 3

152

Order of Operations

100

Solve this equation

4+3 x 2-1

9

200

(2 x 12) + 5-2 / 2

28

300

3³ -10 +7

24

400

42- 10 /2 +5⁰

38

500

10+3(5)² /5

25

Powers of 10

100

5.46 x 10²

546

200

37.14 x 10³

37,140

300

12.89/10²

0.1289

400

5.4 /10³

0.0054

500

6 / 10³

0.006

Estimating with Decimals

100

6.2 x 21.3

120

200

9.6 x 38.6

400

300

60 / 1.93

30

400

209 / 69

3

500

123.9 / 12

10