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5.13 Adding fractions with tenths and hundredths

Interactive practice questions

The model below shows $\frac{1}{10}+\frac{5}{100}$110+5100.

 

a

How many hundredths are there in the model?

b

Now rewrite $\frac{1}{10}+\frac{5}{100}$110+5100 as a single fraction with a denominator of $100$100:

$\frac{1}{10}+\frac{5}{100}=\frac{\editable{}}{100}$110+5100=100

Easy
1min

The model below shows $\frac{3}{10}+\frac{6}{100}$310+6100.

Easy
1min

The model below shows $\frac{8}{10}+\frac{5}{100}$810+5100.

Easy
1min

Find the value of $\frac{90}{100}+\frac{4}{100}$90100+4100.

Easy
1min
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Outcomes

4.NF.C.5

Express a fraction with denominator 10 as an equivalent fraction with denominator 100, and use this technique to add two fractions with respective denominators 10 (tenths) and 100 (hundredths). For example, express 3/10 as 30/100, and and 3/10 + 4/100 = 34/100. (Note: students who can generate equivalent fractions can develop strategies for adding fractions with unlike denominators in general. But addition and subtraction with unlike denominators, in general, is not a requirement at this grade.)

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