Adding decimals

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Introduction to Adding Decimals:
How to add decimals with base ten (block) models

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Regrouping practice for decimals with block models
Regroup so that each place value only has one digit. Use base ten (block) models to help.
1. 17 tenths = ____ ones + ____ tenths
2. 4 ones + 12 tenths + 39 hundredths = ____ ones + ____ tenths + ____ hundredths
3. 6 ones + 29 tenths + 16 hundredths = ____ ones + ____ tenths + ____ hundredths
Adding decimal block models
Add the decimal block models. Give the answer in standard form.
Adding decimals on a grid
Add the decimals by lining up on the grid. Regroup where necessary.
1. 34.8 + 5
2. 4.6 + 2.9
3. 41.03 + 5.72
4. 35.84 + 6.5
Adding decimals and rounding decimal sums
Evaluate. Then, round your answer to the nearest tenth.
1. 7.6 + 2.14
2. 80.65 + 19.23
3. 18.24 + 3.17
4. 98 + 38.97