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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 816 · 40 questions
TalentJR

The fast method (Spot the trick): A 7, 8 or 9 in the ones place → round and fix. × 4, 8, 5, 50 or 15 → doubling or halving tricks. ÷ 5, 25 or 50 → double first. A percentage → start from 10%. Checking or estimating → nines or rounding.

NameDateTime takenScore ___ / 40
  1. 1.59² =
  2. 2.89 + 46 + 78 + 21 =
  3. 3.66 × 8 =
  4. 4.12 × 50 =
  5. 5.Check with nines: 654 + 485 = 1139. Correct or wrong? (a) wrong (b) correct
  6. 6.Best estimate of 902 × 9? (a) 81000 (b) 810 (c) 8100 (d) 16200
  7. 7.11 × 15 =
  8. 8.12 × 16 =
  9. 9.105 × 4 =
  10. 10.19 × 19 =
  11. 11.122 + 89 =
  12. 12.64 × 8 =
  13. 13.20 × 15 =
  14. 14.26 + 68 + 25 + 69 =
  15. 15.530 − 98 =
  16. 16.5% of 290 =
  17. 17.Best estimate of 62 × 82? (a) 48000 (b) 4800 (c) 480 (d) 9600
  18. 18.₹9.50 + ₹11.85 =
  19. 19.₹82.35 + ₹9.50 =
  20. 20.175 − 47 =
  21. 21.375 ÷ 5 =
  22. 22.545 ÷ 5 =
  23. 23.218 − 77 =
  24. 24.113 × 4 =
  25. 25.130 + 59 =
  26. 26.210 − 69 =
  27. 27.₹37.55 + ₹40.40 =
  28. 28.₹34.55 + ₹29.65 =
  29. 29.144 × 4 =
  30. 30.318 + 37 =
  31. 31.1% of 690 =
  32. 32.Best estimate of 78 × 52? (a) 400 (b) 8000 (c) 4000 (d) 40000
  33. 33.10% of 700 =
  34. 34.Best estimate of 97 × 5? (a) 500 (b) 1000 (c) 5000 (d) 50
  35. 35.15 × 14 =
  36. 36.91² =
  37. 37.34 × 15 =
  38. 38.17 × 8 =
  39. 39.4 × 15 =
  40. 40.250 ÷ 25 =

Answer key

  1. 3481
  2. 234
  3. 528
  4. 600
  5. correct
  6. 8100
  7. 165
  8. 192
  9. 420
  10. 361
  11. 211
  12. 512
  13. 300
  14. 188
  15. 432
  16. 14.5
  17. 4800
  18. 21.35
  19. 91.85
  20. 128
  21. 75
  22. 109
  23. 141
  24. 452
  25. 189
  26. 141
  27. 77.95
  28. 64.2
  29. 576
  30. 355
  31. 6.9
  32. 4000
  33. 70
  34. 500
  35. 210
  36. 8281
  37. 510
  38. 136
  39. 60
  40. 10

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