Adding and Subtracting Decimals (Tenths and Hundredths) Worksheets for 5th Grade

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Grade 5MathMixed Math PracticeCCSS 5.NBT.B.7

Skill: Adding and subtracting decimals with tenths and hundredths, mixed on one page

Preview of the Adding and Subtracting Decimals (Tenths and Hundredths) printable worksheet
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Teaching tips and what to try next

Mixing addition and subtraction of tenths and hundredths, this sheet is a good check that children line up decimal points. Ask your child to read each sign aloud before starting the problem. For focused practice, try Adding Decimals to the Hundredths and Subtracting Decimals to the Hundredths.

10 versions, each with its own answer key

Same skill and layout, a fresh set of problems in every version, so children can keep practicing without repeating a page. Problems are not repeated between versions unless a skill has only a small number of possible problems (for example, the addition facts within 10).

Download all 10 versions (one PDF)All 10 answer keys (PDF)

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About this worksheet

This fifth grade worksheet mixes 10 decimal addition problems and 10 decimal subtraction problems in columns. In every problem, one number has tenths and the other has hundredths, such as 12.4 + 3.75, so the key skill is lining up the decimal points rather than the last digits.

That mismatch is where most decimal mistakes happen. A child who lines up the right-hand digits will add 4 tenths to 5 hundredths and get the wrong answer. Writing a zero in the empty hundredths place (12.40) makes both numbers the same length and the problem looks like ordinary whole-number work. Each of the 10 versions has new problems, and every difference is positive.

How to use it: have your child estimate first by rounding each number to the nearest whole number. Then line up the decimal points, write in any helpful zeros, and add or subtract as usual, bringing the decimal point straight down. Graph paper or lined paper turned sideways helps keep the columns neat. Ask your child to compare the answer with the estimate at the end.

The answer key shows every answer in red. For more practice, see our Decimal Addition (Hundredths) and Subtracting Decimals (Hundredths) worksheets.