Students solve a mix of three-digit addition and subtraction problems. Part A has nine fill-in-the-blank problems including 364 + 278, 825 − 467, and 193 + 548. Part B is a matching activity connecting four expressions — such as 247 + 385 and 900 − 456 — to their correct answers.
Alternating between addition and subtraction in one session helps students apply the correct algorithm for each problem type.
Style:
Three-Digit Addition & Subtraction
Part A: Fill in the Blank
Write the missing word or number on each line.
1. 364 + 278 = 642.
2. 825 - 467 = 358.
3. 193 + 548 = 741.
4. 700 - 386 = 314.
5. 456 + 327 = 783.
6. 912 - 578 = 334.
7. About how much is 498 + 312 when you round each to the nearest hundred? 800.
8. 635 - 289 = 346.
9. About how much is 703 - 298 when you round each to the nearest hundred? 400.
Part B: Matching
Match each item on the left to the correct answer on the right.
1. Match each item to its correct answer.
247 + 385
→ 632
642
900 - 456
→ 444
457
163 + 479
→ 642
444
814 - 357
→ 457
632
Three-Digit Addition & Subtraction
★ Part A: Fill in the Blank
Write the missing word or number on each line.
1) 364 + 278 = 642.
2) 825 - 467 = 358.
3) 193 + 548 = 741.
4) 700 - 386 = 314.
5) 456 + 327 = 783.
6) 912 - 578 = 334.
7) About how much is 498 + 312 when you round each to the nearest hundred? 800.
8) 635 - 289 = 346.
9) About how much is 703 - 298 when you round each to the nearest hundred? 400.
★ Part B: Matching
Match each item on the left to the correct answer on the right.
1) Match each item to its correct answer.
247 + 385
→ 632
642
900 - 456
→ 444
457
163 + 479
→ 642
444
814 - 357
→ 457
632
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10 Questions
10-15 minutes
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