Addition online exercise for Grade 3 - Free Printable
Educational worksheet: Addition online exercise for Grade 3. Download and print for classroom or home learning activities.
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Step-by-step solution for: Addition online exercise for Grade 3
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Show Answer Key & Explanations
Step-by-step solution for: Addition online exercise for Grade 3
Let’s solve each problem step by step.
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Addition Problems:
1. 996 + 978
- Ones place: 6 + 8 = 14 → write 4, carry 1
- Tens place: 9 + 7 = 16, plus carried 1 = 17 → write 7, carry 1
- Hundreds place: 9 + 9 = 18, plus carried 1 = 19 → write 19
- Result: 1974
2. 896 + 968
- Ones: 6 + 8 = 14 → write 4, carry 1
- Tens: 9 + 6 = 15, plus 1 = 16 → write 6, carry 1
- Hundreds: 8 + 9 = 17, plus 1 = 18 → write 18
- Result: 1864
3. 795 + 998
- Ones: 5 + 8 = 13 → write 3, carry 1
- Tens: 9 + 9 = 18, plus 1 = 19 → write 9, carry 1
- Hundreds: 7 + 9 = 16, plus 1 = 17 → write 17
- Result: 1793
4. 598 + 958
- Ones: 8 + 8 = 16 → write 6, carry 1
- Tens: 9 + 5 = 14, plus 1 = 15 → write 5, carry 1
- Hundreds: 5 + 9 = 14, plus 1 = 15 → write 15
- Result: 1556
5. 597 + 938
- Ones: 7 + 8 = 15 → write 5, carry 1
- Tens: 9 + 3 = 12, plus 1 = 13 → write 3, carry 1
- Hundreds: 5 + 9 = 14, plus 1 = 15 → write 15
- Result: 1535
6. 596 + 928
- Ones: 6 + 8 = 14 → write 4, carry 1
- Tens: 9 + 2 = 11, plus 1 = 12 → write 2, carry 1
- Hundreds: 5 + 9 = 14, plus 1 = 15 → write 15
- Result: 1524
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Subtraction Problems:
1. 926 - 658
- Ones: 6 - 8 → can’t do, borrow from tens. Tens is 2, so borrow from hundreds.
- Hundreds: 9 becomes 8, tens become 12.
- Now tens: 12 becomes 11 (lend to ones), ones: 6 becomes 16.
- Ones: 16 - 8 = 8
- Tens: 11 - 5 = 6
- Hundreds: 8 - 6 = 2
- Result: 268
2. 835 - 368
- Ones: 5 - 8 → borrow. Tens is 3 → borrow from hundreds.
- Hundreds: 8 → 7, tens: 3 → 13
- Tens lend to ones: 13 → 12, ones: 5 → 15
- Ones: 15 - 8 = 7
- Tens: 12 - 6 = 6
- Hundreds: 7 - 3 = 4
- Result: 467
3. 956 - 598
- Ones: 6 - 8 → borrow. Tens is 5 → borrow from hundreds.
- Hundreds: 9 → 8, tens: 5 → 15
- Tens lend to ones: 15 → 14, ones: 6 → 16
- Ones: 16 - 8 = 8
- Tens: 14 - 9 = 5
- Hundreds: 8 - 5 = 3
- Result: 358
4. 923 - 567
- Ones: 3 - 7 → borrow. Tens is 2 → borrow from hundreds.
- Hundreds: 9 → 8, tens: 2 → 12
- Tens lend to ones: 12 → 11, ones: 3 → 13
- Ones: 13 - 7 = 6
- Tens: 11 - 6 = 5
- Hundreds: 8 - 5 = 3
- Result: 356
5. 753 - 378
- Ones: 3 - 8 → borrow. Tens is 5 → borrow from hundreds.
- Hundreds: 7 → 6, tens: 5 → 15
- Tens lend to ones: 15 → 14, ones: 3 → 13
- Ones: 13 - 8 = 5
- Tens: 14 - 7 = 7
- Hundreds: 6 - 3 = 3
- Result: 375
6. 823 - 386
- Ones: 3 - 6 → borrow. Tens is 2 → borrow from hundreds.
- Hundreds: 8 → 7, tens: 2 → 12
- Tens lend to ones: 12 → 11, ones: 3 → 13
- Ones: 13 - 6 = 7
- Tens: 11 - 8 = 3
- Hundreds: 7 - 3 = 4
- Result: 437
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Final Answer:
Addition:
- 996 + 978 = 1974
- 896 + 968 = 1864
- 795 + 998 = 1793
- 598 + 958 = 1556
- 597 + 938 = 1535
- 596 + 928 = 1524
Subtraction:
- 926 - 658 = 268
- 835 - 368 = 467
- 956 - 598 = 358
- 923 - 567 = 356
- 753 - 378 = 375
- 823 - 386 = 437
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Addition Problems:
1. 996 + 978
- Ones place: 6 + 8 = 14 → write 4, carry 1
- Tens place: 9 + 7 = 16, plus carried 1 = 17 → write 7, carry 1
- Hundreds place: 9 + 9 = 18, plus carried 1 = 19 → write 19
- Result: 1974
2. 896 + 968
- Ones: 6 + 8 = 14 → write 4, carry 1
- Tens: 9 + 6 = 15, plus 1 = 16 → write 6, carry 1
- Hundreds: 8 + 9 = 17, plus 1 = 18 → write 18
- Result: 1864
3. 795 + 998
- Ones: 5 + 8 = 13 → write 3, carry 1
- Tens: 9 + 9 = 18, plus 1 = 19 → write 9, carry 1
- Hundreds: 7 + 9 = 16, plus 1 = 17 → write 17
- Result: 1793
4. 598 + 958
- Ones: 8 + 8 = 16 → write 6, carry 1
- Tens: 9 + 5 = 14, plus 1 = 15 → write 5, carry 1
- Hundreds: 5 + 9 = 14, plus 1 = 15 → write 15
- Result: 1556
5. 597 + 938
- Ones: 7 + 8 = 15 → write 5, carry 1
- Tens: 9 + 3 = 12, plus 1 = 13 → write 3, carry 1
- Hundreds: 5 + 9 = 14, plus 1 = 15 → write 15
- Result: 1535
6. 596 + 928
- Ones: 6 + 8 = 14 → write 4, carry 1
- Tens: 9 + 2 = 11, plus 1 = 12 → write 2, carry 1
- Hundreds: 5 + 9 = 14, plus 1 = 15 → write 15
- Result: 1524
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Subtraction Problems:
1. 926 - 658
- Ones: 6 - 8 → can’t do, borrow from tens. Tens is 2, so borrow from hundreds.
- Hundreds: 9 becomes 8, tens become 12.
- Now tens: 12 becomes 11 (lend to ones), ones: 6 becomes 16.
- Ones: 16 - 8 = 8
- Tens: 11 - 5 = 6
- Hundreds: 8 - 6 = 2
- Result: 268
2. 835 - 368
- Ones: 5 - 8 → borrow. Tens is 3 → borrow from hundreds.
- Hundreds: 8 → 7, tens: 3 → 13
- Tens lend to ones: 13 → 12, ones: 5 → 15
- Ones: 15 - 8 = 7
- Tens: 12 - 6 = 6
- Hundreds: 7 - 3 = 4
- Result: 467
3. 956 - 598
- Ones: 6 - 8 → borrow. Tens is 5 → borrow from hundreds.
- Hundreds: 9 → 8, tens: 5 → 15
- Tens lend to ones: 15 → 14, ones: 6 → 16
- Ones: 16 - 8 = 8
- Tens: 14 - 9 = 5
- Hundreds: 8 - 5 = 3
- Result: 358
4. 923 - 567
- Ones: 3 - 7 → borrow. Tens is 2 → borrow from hundreds.
- Hundreds: 9 → 8, tens: 2 → 12
- Tens lend to ones: 12 → 11, ones: 3 → 13
- Ones: 13 - 7 = 6
- Tens: 11 - 6 = 5
- Hundreds: 8 - 5 = 3
- Result: 356
5. 753 - 378
- Ones: 3 - 8 → borrow. Tens is 5 → borrow from hundreds.
- Hundreds: 7 → 6, tens: 5 → 15
- Tens lend to ones: 15 → 14, ones: 3 → 13
- Ones: 13 - 8 = 5
- Tens: 14 - 7 = 7
- Hundreds: 6 - 3 = 3
- Result: 375
6. 823 - 386
- Ones: 3 - 6 → borrow. Tens is 2 → borrow from hundreds.
- Hundreds: 8 → 7, tens: 2 → 12
- Tens lend to ones: 12 → 11, ones: 3 → 13
- Ones: 13 - 6 = 7
- Tens: 11 - 8 = 3
- Hundreds: 7 - 3 = 4
- Result: 437
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Final Answer:
Addition:
- 996 + 978 = 1974
- 896 + 968 = 1864
- 795 + 998 = 1793
- 598 + 958 = 1556
- 597 + 938 = 1535
- 596 + 928 = 1524
Subtraction:
- 926 - 658 = 268
- 835 - 368 = 467
- 956 - 598 = 358
- 923 - 567 = 356
- 753 - 378 = 375
- 823 - 386 = 437
Parent Tip: Review the logic above to help your child master the concept of addition worksheet class.
