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Adding & Subtracting Fractions with Unlike Denominators (Mixed Review) — Easy Worksheet 2
Grade 5 · MathSheets Name: ____________________ Date: __________
Answer each question. The same kind of sum comes in different shapes. Write fractions in simplest form, as a mixed number if greater than 1.
How to solve
Find a common denominator (a common multiple of both denominators, like the LCD). Rewrite each fraction as an equivalent fraction with that denominator, then add or subtract the numerators and keep the denominator. Simplify, and change an improper fraction to a mixed number.
Example
58 + 14 = ___
Answer: 78
Warm-up
Not quite. The answer is
💡 The LCD of 6 and 2 is 6. Rewrite: 12 = 36 (top and bottom × 3). Fractions: the denominators match now, so work with the numerators: 5 − 3 = 2, so 26. Simplify: 26 = 13. So 56 − 12 = 13.
✓ Correct!
Not quite. The answer is
💡 The LCD of 6 and 2 is 6. Rewrite: 12 = 36 (top and bottom × 3). Fractions: the denominators match now, so work with the numerators: 5 − 3 = 2, so 26. Simplify: 26 = 13. So 56 − 12 = 13.
💡 How to solve: Adding & Subtracting Fractions with Unlike Denominators (Mixed Review)
Find a common denominator (a common multiple of both denominators, like the LCD). Rewrite each fraction as an equivalent fraction with that denominator, then add or subtract the numerators and keep the denominator. Simplify, and change an improper fraction to a mixed number.
Try a similar one
56 − 23 = ___
✓ You've got it! Press Next to keep going. Not yet — the answer is . Read the steps above once more.
Not quite. The answer is
💡 The LCD of 10 and 5 is 10. Rewrite: 25 = 410 (top and bottom × 2). Fractions: the denominators match now, so work with the numerators: 9 − 4 = 5, so 510. Simplify: 510 = 12. So 910 − 25 = 12.
✓ Correct!
Not quite. The answer is
💡 The LCD of 10 and 5 is 10. Rewrite: 25 = 410 (top and bottom × 2). Fractions: the denominators match now, so work with the numerators: 9 − 4 = 5, so 510. Simplify: 510 = 12. So 910 − 25 = 12.
💡 How to solve: Adding & Subtracting Fractions with Unlike Denominators (Mixed Review)
Find a common denominator (a common multiple of both denominators, like the LCD). Rewrite each fraction as an equivalent fraction with that denominator, then add or subtract the numerators and keep the denominator. Simplify, and change an improper fraction to a mixed number.
Try a similar one
710 − 15 = ___
✓ You've got it! Press Next to keep going. Not yet — the answer is . Read the steps above once more.
Picture it
Not quite. The answer is
💡 The LCD of 2 and 6 is 6. Rewrite: 12 = 36 (top and bottom × 3). Fractions: the denominators match now, so work with the numerators: 3 − 1 = 2, so 26. Simplify: 26 = 13. So 12 − 16 = 13.
✓ Correct!
Not quite. The answer is
💡 The LCD of 2 and 6 is 6. Rewrite: 12 = 36 (top and bottom × 3). Fractions: the denominators match now, so work with the numerators: 3 − 1 = 2, so 26. Simplify: 26 = 13. So 12 − 16 = 13.
💡 How to solve: Adding & Subtracting Fractions with Unlike Denominators (Mixed Review)
Find a common denominator (a common multiple of both denominators, like the LCD). Rewrite each fraction as an equivalent fraction with that denominator, then add or subtract the numerators and keep the denominator. Simplify, and change an improper fraction to a mixed number.
Try a similar one
16 + 13 = ___
✓ You've got it! Press Next to keep going. Not yet — the answer is . Read the steps above once more.
Not quite. The answer is
💡 The LCD of 4 and 2 is 4. Rewrite: 12 = 24 (top and bottom × 2). Fractions: the denominators match now, so add the numerators: 1 + 2 = 3, so 34. So 14 + 12 = 34.
✓ Correct!
Not quite. The answer is
💡 The LCD of 4 and 2 is 4. Rewrite: 12 = 24 (top and bottom × 2). Fractions: the denominators match now, so add the numerators: 1 + 2 = 3, so 34. So 14 + 12 = 34.
💡 How to solve: Adding & Subtracting Fractions with Unlike Denominators (Mixed Review)
Find a common denominator (a common multiple of both denominators, like the LCD). Rewrite each fraction as an equivalent fraction with that denominator, then add or subtract the numerators and keep the denominator. Simplify, and change an improper fraction to a mixed number.
Try a similar one
34 − 12 = ___
✓ You've got it! Press Next to keep going. Not yet — the answer is . Read the steps above once more.
Not quite. The answer is
💡 The LCD of 3 and 6 is 6. Rewrite: 23 = 46 (top and bottom × 2). Fractions: the denominators match now, so add the numerators: 4 + 5 = 9, so 96. 96 is more than 1 whole: 96 = 1 12. So 23 + 56 = 1 12.
✓ Correct!
Not quite. The answer is
💡 The LCD of 3 and 6 is 6. Rewrite: 23 = 46 (top and bottom × 2). Fractions: the denominators match now, so add the numerators: 4 + 5 = 9, so 96. 96 is more than 1 whole: 96 = 1 12. So 23 + 56 = 1 12.
💡 How to solve: Adding & Subtracting Fractions with Unlike Denominators (Mixed Review)
Find a common denominator (a common multiple of both denominators, like the LCD). Rewrite each fraction as an equivalent fraction with that denominator, then add or subtract the numerators and keep the denominator. Simplify, and change an improper fraction to a mixed number.
Try a similar one
12 − 16 = ___
✓ You've got it! Press Next to keep going. Not yet — the answer is . Read the steps above once more.
Think it through
Not quite. The answer is
💡 Count in multiples of the biggest denominator, 6: 6. 6 is the first one that 2 also divides into, so the LCD is 6.
✓ Correct!
Not quite. The answer is
💡 Count in multiples of the biggest denominator, 6: 6. 6 is the first one that 2 also divides into, so the LCD is 6.
💡 How to solve: Adding & Subtracting Fractions with Unlike Denominators (Mixed Review)
Find a common denominator (a common multiple of both denominators, like the LCD). Rewrite each fraction as an equivalent fraction with that denominator, then add or subtract the numerators and keep the denominator. Simplify, and change an improper fraction to a mixed number.
Try a similar one
712 + 56 = ___
✓ You've got it! Press Next to keep going. Not yet — the answer is . Read the steps above once more.
Not quite. The answer is
💡 The LCD of 2 and 4 is 4. Rewrite: 12 = 24 (top and bottom × 2). Fractions: the denominators match now, so add the numerators: 2 + 3 = 5, so 54. 54 is more than 1 whole: 54 = 1 14. So 12 + 34 = 1 14.
✓ Correct!
Not quite. The answer is
💡 The LCD of 2 and 4 is 4. Rewrite: 12 = 24 (top and bottom × 2). Fractions: the denominators match now, so add the numerators: 2 + 3 = 5, so 54. 54 is more than 1 whole: 54 = 1 14. So 12 + 34 = 1 14.
💡 How to solve: Adding & Subtracting Fractions with Unlike Denominators (Mixed Review)
Find a common denominator (a common multiple of both denominators, like the LCD). Rewrite each fraction as an equivalent fraction with that denominator, then add or subtract the numerators and keep the denominator. Simplify, and change an improper fraction to a mixed number.
Try a similar one
12 + 34 = ___
✓ You've got it! Press Next to keep going. Not yet — the answer is . Read the steps above once more.
Challenge
Not quite. The answer is
💡 Work backwards: the missing number is 12 − 25 = 110. Check: 25 + 110 = 12.
✓ Correct!
Not quite. The answer is
💡 Work backwards: the missing number is 12 − 25 = 110. Check: 25 + 110 = 12.
💡 How to solve: Adding & Subtracting Fractions with Unlike Denominators (Mixed Review)
Find a common denominator (a common multiple of both denominators, like the LCD). Rewrite each fraction as an equivalent fraction with that denominator, then add or subtract the numerators and keep the denominator. Simplify, and change an improper fraction to a mixed number.
Try a similar one
56 + 712 = ___
✓ You've got it! Press Next to keep going. Not yet — the answer is . Read the steps above once more.
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Adding & Subtracting Fractions with Unlike Denominators (Mixed Review) — Easy Worksheet 2
Answer each question. The same kind of sum comes in different shapes. Write fractions in simplest form, as a mixed number if greater than 1.