Rational Numbers

Blast from the Past

100

Write 425 in scientific notation

4.25 x 10²

200

What's the square root of 225?

15

300

True or false?

You move the decimal left when you multiply by a multiple of 10 with a positive exponent.

False, you move it right

400

What is 3² x 3⁴?

729

500

Write 4^-2 as a decimal.

0.0625

Mixed Practice

100

True or False?

Negative numbers are always less than positive numbers.

True

200

Which of the following has a different value than the others?

5 3/5, 5.6, 5 5/6, 560%

5 5/6

300

True or False?

Scientifc notation numbers with a negative exponent will always be greater than negative numbers.

False, they can also be negative (not always, but they can) Ex: -1.3 x 10^-3

400

Which of the following is NOT between -3 and 4?

A. -20/10          C. 13/4

B. 105%            D. -3.1

D

500

Compare using >, <, or =

Square root of 81 ___  40/5

>

Ordering

100

Order from greatest to least:

2/3, 1/5, 3/4, 1/2

3/4, 2/3, 1/2, 1/5

200

Order from least to greatest:

0.2, 4/5, -1/2, 3

-1/2, 0.2, 4/5, 3

300

Order in ascending order:

4.5676, 4.108, 4.673, 4.4444

4.108, 4.4444, 4.5676, 4.673

400

Order in descending order:

10/3, 304%, 3 2/9, 3.1

10/3, 3 2/9, 3.1, 304%

500

Order from least to greatest:

276%, 2 3/4, 2.72, 2 7/9

2.72, 2 3/4, 276%, 2 7/9

Equivalencies

100

What's 20% as a decimal and fraction?

Decimal 0.2; Fraction 1/5

200

What's 7/8 as a decimal and a percent?

Decimal 0.875; Percent 87.5%

300

What's 65% as a fraction and a decimal? 

Fraction 13/20; Decimal 0.65

400

What's 0.120 as a fraction and a percent?

Fraction 3/25; Percent 12%

500

What's 554% as a fraction and decimal?

Fraction 5 27/50; Decimal 5.54