Practice Decimal Representation in Math

Use these practice problems to test your method after reviewing the concept explanation and worked examples.

Quick Recap

Writing fractions as digits to the right of a decimal point, using place values of tenths, hundredths, thousandths, etc.

Just like 234=200+30+4234 = 200 + 30 + 4, we have 2.34=2+0.3+0.042.34 = 2 + 0.3 + 0.04.

Showing a random 20 of 50 problems.

Example 1

easy
Write each fraction as a decimal and classify as terminating or repeating: (a) 34\dfrac{3}{4}, (b) 29\dfrac{2}{9}.

Example 2

easy
Write 710\frac{7}{10} as a decimal.

Example 3

medium
What decimal is exactly halfway between 0.70.7 and 0.80.8?

Example 4

easy
Which is larger, 0.420.42 or 0.40.4?

Example 5

medium
What decimal is exactly halfway between 0.20.2 and 0.30.3?

Example 6

medium
Order least to greatest: 0.09,0.1,0.0990.09, 0.1, 0.099.

Example 7

easy
Write 91000\frac{9}{1000} as a decimal.

Example 8

challenge
Without dividing, explain why 13\frac{1}{3} cannot be written as a terminating decimal.

Example 9

easy
Write 810\frac{8}{10} as a decimal.

Example 10

medium
Convert 0.3750.375 to a fraction in lowest terms.

Example 11

hard
A value rounds to 2.42.4 at the nearest tenth. Give the smallest possible value.

Example 12

easy
How many tenths are in 0.50.5?

Example 13

medium
Add 0.6+0.450.6 + 0.45 and write the answer as a decimal.

Example 14

easy
Write 0.60.6 in expanded form using fractions.

Example 15

challenge
A number rounds to 4.64.6 when rounded to the nearest tenth. What is the range of possible original values?

Example 16

easy
Expand 2.342.34 as a sum of place values.

Example 17

medium
Round 7.45837.4583 to the nearest hundredth.

Example 18

challenge
Express 0.16โ€พ0.1\overline{6} (only the 66 repeats) as a fraction in simplest form.

Example 19

medium
Write 0.50.5 as a percent and as a fraction in simplest form.

Example 20

challenge
Find the 5050th decimal digit of 17=0.142857โ€พ\frac{1}{7}=0.\overline{142857}.