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Adding Fractions Mastery
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Adding Fractions Mastery
Find common denominators when needed, then add the fractions. Simplify your answers where possible.
Common Denominators
1.Which number is the lowest common multiple of 2 and 5?
- 7
- 10
- 15
- 20
2.Which number is the lowest common multiple of 3 and 8?
- 11
- 18
- 24
- 32
3.Which number is the lowest common multiple of 4 and 10?
- 14
- 20
- 30
- 40
4.Match each pair of denominators with its lowest common multiple.
- 2 and 7
- 3 and 4
- 5 and 6
- 4 and 6
- 14
- 12
- 30
- 12
Equivalent Fractions
5.Complete the equivalent fraction: 2/3 = /12.
6.Write 3/5 as an equivalent fraction with denominator 10.
7.The bar shows a fraction with some parts shaded. Write the fraction shown, then write an equivalent fraction with denominator 12.
Add the Fractions
8.Calculate 1/2 + 1/5. Give your answer in simplest form.
9.Calculate 1/3 + 1/6. Give your answer in simplest form.
10.Calculate 2/5 + 1/4. Give your answer in simplest form.
11.A ribbon is divided into 8 equal parts, and 2 parts are shaded. What fraction is shaded? Write an equivalent fraction with denominator 4.
12.Hugo ate 1/4 of a pikelet stack at breakfast and 1/3 of the same stack later. What fraction of the stack did she eat altogether?
13.A water bottle was 1/6 full. Levi added enough water to fill another 1/2 of the bottle. What fraction of the bottle is full now?
14.In your own words, describe how you can add two fractions that have different denominators.
3 printable pages
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