Students work through nine like-denominator computations including 5/12 + 4/12, 7/9 - 2/9, 3/10 + 6/10, 8/11 - 3/11, and 10/12 - 6/12, keeping the denominator steady and adding or subtracting only the numerators. Each answer reinforces the rule that the size of the equal parts never changes.
Part B is a four-pair matching task linking expressions like 4/6 + 2/6, 9/10 - 5/10, 1/3 + 2/3, and 7/8 - 1/8 to results such as 6/8, 4/10, 3/3, and 6/6 — pushing fourth graders to spot when a sum reaches one whole. Computation plus matching builds quick, confident fraction sense.
Style:
Adding & Subtracting Fractions
Part A: Fill in the Blank
Write the missing word or number on each line.
1. 512 + 412 = 912.
2. 79 − 29 = 59.
3. 310 + 610 = 910.
4. 811 − 311 = 511.
5. 27 + 47 = 67.
6. 68 − 28 = 48.
7. 16 + 36 = 46.
8. 1012 − 612 = 412.
9. 35 + 15 = 45.
Part B: Matching
Match each item on the left to the correct answer on the right.
1. Match each item to its correct answer.
46 + 26
→ 66
68
910 − 510
→ 410
33
13 + 23
→ 33
410
78 − 18
→ 68
66
Adding & Subtracting Fractions
★ Part A: Fill in the Blank
Write the missing word or number on each line.
1) 5/12 + 4/12 = 9/12.
2) 7/9 − 2/9 = 5/9.
3) 3/10 + 6/10 = 9/10.
4) 8/11 − 3/11 = 5/11.
5) 2/7 + 4/7 = 6/7.
6) 6/8 − 2/8 = 4/8.
7) 1/6 + 3/6 = 4/6.
8) 10/12 − 6/12 = 4/12.
9) 3/5 + 1/5 = 4/5.
★ Part B: Matching
Match each item on the left to the correct answer on the right.
1) Match each item to its correct answer.
4/6 + 2/6
→ 6/6
6/8
9/10 − 5/10
→ 4/10
3/3
1/3 + 2/3
→ 3/3
4/10
7/8 − 1/8
→ 6/8
6/6
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10 Questions
10-15 minutes
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