Grade 6 Mental Math Worksheets | Free Printables - Free Printable

Sure! Let’s solve each problem step by step in the Mental Maths worksheet for Grade 6. I’ll go column by column: Add, Subtract, Multiply, Divide.

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## ✔ ADD COLUMN

1. 29 + 39
→ 29 + 40 = 69, minus 1 → 68

2. 86 + 42
→ 80 + 40 = 120, 6 + 2 = 8 → 128

3. 94 + 194
→ 94 + 200 = 294, minus 6 → 288

4. 231 + 79
→ 231 + 80 = 311, minus 1 → 310

5. 412 + 130
→ 400 + 100 = 500, 12 + 30 = 42 → 542

6. 351 + 251
→ 350 + 250 = 600, 1 + 1 = 2 → 602

7. 99 + 121
→ 100 + 121 = 221, minus 1 → 220

8. 517 + 217
→ 500 + 200 = 700, 17 + 17 = 34 → 734

9. 813 + 99
→ 813 + 100 = 913, minus 1 → 912

10. 275 + 75
→ 275 + 75 = 350 → 350

✔ Add Answers:
68, 128, 288, 310, 542, 602, 220, 734, 912, 350

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## ✔ SUBTRACT COLUMN

1. 624 - 84
→ 624 - 80 = 544, minus 4 → 540

2. 120 - 65
→ 120 - 60 = 60, minus 5 → 55

3. 358 - 126
→ 358 - 100 = 258, -26 → 258 - 20 = 238, -6 = 232

4. 836 - 95
→ 836 - 100 = 736, plus 5 → 741

5. 312 - 105
→ 312 - 100 = 212, minus 5 → 207

6. 87 - 32
→ 87 - 30 = 57, minus 2 → 55

7. 169 - 48
→ 169 - 50 = 119, plus 2 → 121

8. 254 - 89
→ 254 - 90 = 164, plus 1 → 165

9. 96 - 45
→ 96 - 40 = 56, minus 5 → 51

10. 326 - 83
→ 326 - 80 = 246, minus 3 → 243

✔ Subtract Answers:
540, 55, 232, 741, 207, 55, 121, 165, 51, 243

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## ✔ MULTIPLY COLUMN

1. 80 × 30
→ 8 × 3 = 24, add two zeros → 2400

2. 50 × 90
→ 5 × 9 = 45, add two zeros → 4500

3. 70 × 70
→ 7 × 7 = 49, add two zeros → 4900

4. 60 × 80
→ 6 × 8 = 48, add two zeros → 4800

5. 90 × 80
→ 9 × 8 = 72, add two zeros → 7200

6. 300 × 60
→ 3 × 6 = 18, add three zeros (300 has 2, 60 has 1) → 18,000

7. 700 × 50
→ 7 × 5 = 35, add three zeros → 35,000

8. 60 × 700
→ 6 × 7 = 42, add three zeros → 42,000

9. 40 × 900
→ 4 × 9 = 36, add three zeros → 36,000

10. 20 × 600
→ 2 × 6 = 12, add three zeros → 12,000

✔ Multiply Answers:
2400, 4500, 4900, 4800, 7200, 18000, 35000, 42000, 36000, 12000

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## ✔ DIVIDE COLUMN

1. 240 ÷ 80
→ 24 ÷ 8 = 3 → 3

2. 280 ÷ 70
→ 28 ÷ 7 = 4 → 4

3. 540 ÷ 60
→ 54 ÷ 6 = 9 → 9

4. 480 ÷ 40
→ 48 ÷ 4 = 12 → 12

5. 250 ÷ 50
→ 25 ÷ 5 = 5 → 5

6. 360 ÷ 6
→ 36 ÷ 6 = 6, add zero → 60

7. 180 ÷ 3
→ 18 ÷ 3 = 6, add zero → 60

8. 960 ÷ 12
→ 96 ÷ 12 = 8, add zero → 80

9. 200 ÷ 4
→ 20 ÷ 4 = 5, add zero → 50

10. 240 ÷ 12
→ 24 ÷ 12 = 2, add zero → 20

✔ Divide Answers:
3, 4, 9, 12, 5, 60, 60, 80, 50, 20

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## 🎯 FINAL ANSWER KEY:

➕ Add:

68, 128, 288, 310, 542, 602, 220, 734, 912, 350

➖ Subtract:

540, 55, 232, 741, 207, 55, 121, 165, 51, 243

✖️ Multiply:

2400, 4500, 4900, 4800, 7200, 18000, 35000, 42000, 36000, 12000

➗ Divide:

3, 4, 9, 12, 5, 60, 60, 80, 50, 20

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Let me know if you’d like this formatted as a printable answer sheet or want explanations for any specific problem! 😊