Of course! I’ll solve each of the 20 addition problems from the Grade 6 worksheet and explain how to do them step by step.
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General Strategy:
To add three numbers, you can:
1. Add the first two numbers.
2. Add the result to the third number.
3. Or, group numbers that are easier to add (like multiples of 10 or 100) for mental math.
Let’s solve each one:
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1. 612 + 512 + 11
- First, 612 + 512 = 1124
- Then, 1124 + 11 =
1135
✔ Answer: 1135
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2. 125 + 74 + 95
- 125 + 95 = 220 (easy because 125+95 = 220)
- 220 + 74 =
294
✔ Answer: 294
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3. 916 + 51 + 437
- 916 + 437 = 1353
- 1353 + 51 =
1404
✔ Answer: 1404
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4. 189 + 191 + 96
- 189 + 191 = 380 (because 190+190=380, so 189+191=380)
- 380 + 96 =
476
✔ Answer: 476
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5. 729 + 48 + 211
- 729 + 211 = 940 (729 + 200 = 929; 929 + 11 = 940)
- 940 + 48 =
988
✔ Answer: 988
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6. 139 + 92 + 164
- 139 + 92 = 231
- 231 + 164 =
395
✔ Answer: 395
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7. 82 + 617 + 429
- 617 + 429 = 1046
- 1046 + 82 =
1128
✔ Answer: 1128
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8. 362 + 14 + 66
- 14 + 66 = 80
- 362 + 80 =
442
✔ Answer: 442
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9. 825 + 131 + 77
- 131 + 77 = 208
- 825 + 208 =
1033
✔ Answer: 1033
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10. 72 + 436 + 85
- 72 + 85 = 157
- 157 + 436 =
593
✔ Answer: 593
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11. 906 + 59 + 412
- 906 + 412 = 1318
- 1318 + 59 =
1377
✔ Answer: 1377
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12. 25 + 63 + 457
- 25 + 63 = 88
- 88 + 457 =
545
✔ Answer: 545
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13. 638 + 802 + 55
- 638 + 802 = 1440
- 1440 + 55 =
1495
✔ Answer: 1495
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14. 217 + 306 + 74
- 306 + 74 = 380
- 217 + 380 =
597
✔ Answer: 597
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15. 435 + 128 + 65
- 435 + 65 = 500
- 500 + 128 =
628
✔ Answer: 628
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16. 568 + 219 + 18
- 568 + 18 = 586
- 586 + 219 =
805
✔ Answer: 805
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17. 76 + 142 + 93
- 76 + 93 = 169
- 169 + 142 =
311
✔ Answer: 311
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18. 928 + 52 + 41
- 928 + 52 = 980
- 980 + 41 =
1021
✔ Answer: 1021
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19. 687 + 36 + 47
- 36 + 47 = 83
- 687 + 83 =
770
✔ Answer: 770
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20. 819 + 25 + 36
- 25 + 36 = 61
- 819 + 61 =
880
✔ Answer: 880
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##
✔ Final Answers List:
1.
1135
2.
294
3.
1404
4.
476
5.
988
6.
395
7.
1128
8.
442
9.
1033
10.
593
11.
1377
12.
545
13.
1495
14.
597
15.
628
16.
805
17.
311
18.
1021
19.
770
20.
880
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Let me know if you’d like to see column addition or a visual breakdown for any problem!
Parent Tip: Review the logic above to help your child master the concept of year 6 maths worksheet.
