Real Numbers

Which is the best estimate of the square root of 63?

• 7.1

• 7.3

• 7.5

• 7.9

The √20 is between which two integers?

• 2 & 3

• 3 & 4

• 4 & 5

• 5 & 6

Which number is irrational?

• 9.6

• √45

• 3/8

• 3.4 x 10⁵

Describe √2 as rational, irrational, not real, or natural. If a real number, give the approximate value.

• Rational, 1.4

• Irrational, 1.4142..

• Not real

• Natural, 1

Express the fraction 7/9 as a decimal.

• 0.8

• 0.88888...

• 0.7

• 0.777777...

Write 0.35 as a fraction in simplest form.

• 35/100

• 3.5/10

• 7/20

• 3/10

Which of the following is rational?

• .211232112421125. . . .

• π

• √25

• √12

The set of __________ contains all the numbers that are rational and irrational.

• integers

• whole numbers

• real numbers

• natural numbers

Check all of the sets of numbers that are contained in the set of Rational Numbers.

• Integers

• Irrational Numbers

• Whole Numbers

• Natural Numbers

• Real Numbers

Choose the number(s) that apply to these sets: Real, Rational, Integer

• -27

• 2/3

• 0

• 1/4

• 2.75