8th Grade January Spiral Review 1

Convert Fracs/Decimals

100

2/5

0.4

200

1/3

0.3333...

300

0.666...

2/3

400

0.2

1/5

500

seven tenths

7/10

0.7

Repeating Decimals to Fracs

100

0.2222...

2/9

200

.36363636...

4/11

300

4.272727...

4 8/11

400

0.8333333...

5/6

500

.181818...

2/11

Order of Operations

100

40-8(2)+5

29

200

{14-(8+2)}+4^2

20

300

90-80-:40 *3

84

400

2^2+5^2+8-:2

33

500

64-:{45-(5+8)}

2

Square Roots

100

sqrt(25)

5

200

sqrt(196)

14

300

9²

81

400

sqrt(100)

10

500

sqrt(121)

11

Exponents & Scientific Notation

100

(d^-3*d^2)/(d^2)^3

1/d^7

200

(x^6y^3)^5

x³⁰y¹⁵

300

Is the following equation true or false?

(7^-7)^2*7^2=7^-3*7^4

False

400

Frankie entered a sweepstakes to win a grand prize of $10,500,000,000. Express this amount using scientific notation.

1.05 x 10¹⁰

500

(7.2xx10^-3)/(4 xx 10^-5)

1.8xx10^2
or 180