Let’s solve each addition problem one by one.
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Problem 1: 156 + 532
Start from the right:
- Ones: 6 + 2 = 8
- Tens: 5 + 3 = 8
- Hundreds: 1 + 5 = 6
→ Answer:
688
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Problem 2: 233 + 445
- Ones: 3 + 5 = 8
- Tens: 3 + 4 = 7
- Hundreds: 2 + 4 = 6
→ Answer:
678
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Problem 3: 222 + 444
- Ones: 2 + 4 = 6
- Tens: 2 + 4 = 6
- Hundreds: 2 + 4 = 6
→ Answer:
666
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Problem 4: 442 + 567
- Ones: 2 + 7 = 9
- Tens: 4 + 6 = 10 → write 0, carry 1
- Hundreds: 4 + 5 = 9, plus carried 1 = 10 → write 0, carry 1 to thousands
Wait — let’s do it carefully:
Actually:
Hundreds: 4 + 5 = 9, but we have a carry from tens? Let’s recheck:
Tens: 4 + 6 = 10 → so write 0 in tens place, carry 1 to hundreds.
Hundreds: 4 + 5 = 9, plus 1 carried = 10 → write 0 in hundreds, carry 1 to thousands.
So total: 1 (thousand), 0 (hundreds), 0 (tens), 9 (ones) →
1009
Wait — that can’t be right for Grade 2? Let me double-check:
442
+567
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Ones: 2+7=9
Tens: 4+6=10 → write 0, carry 1
Hundreds: 4+5=9, plus 1 = 10 → write 0, carry 1 → so 1009? But 442 + 567 is actually 1009? Yes, mathematically correct.
But maybe I made a mistake? Let me add again:
442 + 500 = 942
942 + 67 = 1009 → yes, correct.
But wait — this might be too big for Grade 2? The worksheet says “Grade 2”, but 442 + 567 = 1009 is fine if they’re learning 3-digit addition with regrouping.
We’ll go with
1009
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Problem 5: 266 + 221
- Ones: 6 + 1 = 7
- Tens: 6 + 2 = 8
- Hundreds: 2 + 2 = 4
→ Answer:
487
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Problem 6: 133 + 136
- Ones: 3 + 6 = 9
- Tens: 3 + 3 = 6
- Hundreds: 1 + 1 = 2
→ Answer:
269
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Problem 7: 166 + 555
- Ones: 6 + 5 = 11 → write 1, carry 1
- Tens: 6 + 5 = 11, plus 1 carried = 12 → write 2, carry 1
- Hundreds: 1 + 5 = 6, plus 1 carried = 7
→ Answer:
721
Check: 166 + 555 = 721?
166 + 500 = 666; 666 + 55 = 721 → yes.
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Problem 8: 333 + 221
- Ones: 3 + 1 = 4
- Tens: 3 + 2 = 5
- Hundreds: 3 + 2 = 5
→ Answer:
554
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Problem 9: 976 + 224
- Ones: 6 + 4 = 10 → write 0, carry 1
- Tens: 7 + 2 = 9, plus 1 carried = 10 → write 0, carry 1
- Hundreds: 9 + 2 = 11, plus 1 carried = 12 → write 2, carry 1 → so 1200? Wait:
Actually:
Hundreds: 9 + 2 = 11, plus 1 carried = 12 → so write 2 in hundreds, carry 1 to thousands → 1200?
Let’s compute:
976 + 224 = ?
976 + 200 = 1176
1176 + 24 = 1200 → yes!
→ Answer:
1200
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Now, let’s list all answers clearly:
1. 156 + 532 =
688
2. 233 + 445 =
678
3. 222 + 444 =
666
4. 442 + 567 =
1009
5. 266 + 221 =
487
6. 133 + 136 =
269
7. 166 + 555 =
721
8. 333 + 221 =
554
9. 976 + 224 =
1200
All calculations verified.
Final Answer:
688, 678, 666, 1009, 487, 269, 721, 554, 1200
Parent Tip: Review the logic above to help your child master the concept of addition for grade 2.
