Vocabulary
Repeating Decimals as Fractions
Approximating Square Roots
Compare and Order Real Numbers and R vs. I
100

What is a rational number?

A number that can be written as a fraction.

100

Convert the repeating decimal into a fraction in simplest form.

0.4

4/9

100

What is the square root of 27

5.1

100

Put the following numbers in order from least to greatest.

-2, 0.3 (repeating), square root of 34, 5

-2, 0.3 (repeating), 5, square root of 34

200

What is an irrational number?

A number that can be written as a fraction.

200

Convert the repeating decimal to a fraction in simplest form.

0.7

7/9

200

What is the square root of 39

6.2

200

Is the square root of 256 rational or irrational. Why?

16 rational

300

What is the square root?

the opposite of squaring a number

300

Convert the repeating decimal to a fraction in simplest form.

1.23

1  23/99

300

What is the square root of 48

 6.9

300
Put the following real numbers in order from least to greatest.


0.45 repeating, 6.45, 1/4, the square root of 24

1/4, 0.45 repeating, the square root of 24, 6.45

400
What is a perfect square?

a number made by squaring a whole number

400

Convert the repeating decimal to a fraction in simplest form.

2.36

2  36/99

400

What is the square root of 51

7.1

400
Is 1.342... rational or irrational. Why?

Irrational because the "..." means it goes on forever without repeating and it cannot be written as a fraction

500
Give 3 example of a rational and irrational number.

Answers will vary

500

Convert the repeating decimal to a fraction in simplest form.

3.78

3  78/99

500

What is the square root of 144


12


500
Is the square root of 255 rational or irrational. Why?

Irrational because it is not a perfect square

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