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4th grade fractions: the skills and how to practice them
In 4th grade, fractions get serious. The main skills are making equivalent fractions, comparing fractions with different denominators, and adding and subtracting fractions with the same denominator, including mixed numbers. Students also start multiplying a fraction by a whole number.
Equivalent fractions are the key that unlocks the rest. If your child can turn 3/4 into twelfths, comparing and adding become much easier.
Worked examples
- Equivalent fractions: multiply top and bottom by the same number. 3/4 = 9/12 (both multiplied by 3).
- Comparing with a common denominator: 2/3 = 8/12 and 3/4 = 9/12, so 2/3 < 3/4.
- Adding with the same denominator: 3/8 + 4/8 = 7/8. Add the tops; the bottom stays the same.
- Whole number times a fraction: 3 × 2/5 = 6/5 = 1 1/5.
6 practice questions for 4th grade
- 2/5 = ?/10
- 3/4 = ?/8
- 5/6 ◯ 3/4
- 2/6 + 3/6 = ?
- 7/10 − 4/10 = ?
- 5/8 + 6/8 = 11/8 = ?
Use <, > or = for the ◯.
Show answers
- 2/5 = 4/10
- 3/4 = 6/8
- 5/6 > 3/4
- 2/6 + 3/6 = 5/6
- 7/10 − 4/10 = 3/10
- 5/8 + 6/8 = 11/8 = 1 3/8
Tips for parents
- When adding, check your child isn't adding the bottoms too. That's the most common mistake.
- Compare each fraction to 1/2 first. It's often enough to decide which is bigger.
- Write improper answers as mixed numbers as well: 11/8 = 1 3/8.