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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 972 · 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. 1.275 − 56 =
  2. 2.91² =
  3. 3.12 × 12 =
  4. 4.9 + 5 + 3 + 9 + 1 =
  5. 5.12 × 8 =
  6. 6.49² =
  7. 7.₹43.10 − ₹35.45 =
  8. 8.13 × 15 =
  9. 9.333 + 89 =
  10. 10.₹57.80 + ₹9.70 =
  11. 11.Best estimate of 91 × 32? (a) 27000 (b) 270 (c) 5400 (d) 2700
  12. 12.81² =
  13. 13.67 × 5 =
  14. 14.1% of 160 =
  15. 15.29² =
  16. 16.405 − 36 =
  17. 17.59² =
  18. 18.553 − 19 =
  19. 19.65 × 4 =
  20. 20.12 × 11 =
  21. 21.520 − 96 =
  22. 22.335 ÷ 5 =
  23. 23.Best estimate of 88 × 72? (a) 6300 (b) 630 (c) 12600 (d) 63000
  24. 24.₹87.25 + ₹35.60 =
  25. 25.750 ÷ 25 =
  26. 26.Best estimate of 797 × 3? (a) 2400 (b) 24000 (c) 4800 (d) 240
  27. 27.3 + 9 + 1 + 1 =
  28. 28.190 ÷ 5 =
  29. 29.79² =
  30. 30.48 × 15 =
  31. 31.710 ÷ 5 =
  32. 32.10% of 210 =
  33. 33.17 + 19 + 41 + 13 =
  34. 34.Check with nines: 39 × 61 = 2381. Correct or wrong? (a) wrong (b) correct
  35. 35.7 + 6 + 8 + 3 + 2 =
  36. 36.403 − 46 =
  37. 37.4 + 6 + 2 + 8 + 8 =
  38. 38.60 + 57 + 15 + 75 =
  39. 39.64 + 52 + 73 + 36 =
  40. 40.14 + 53 + 60 + 73 =

Answer key

  1. 219
  2. 8281
  3. 144
  4. 27
  5. 96
  6. 2401
  7. 7.65
  8. 195
  9. 422
  10. 67.5
  11. 2700
  12. 6561
  13. 335
  14. 1.6
  15. 841
  16. 369
  17. 3481
  18. 534
  19. 260
  20. 132
  21. 424
  22. 67
  23. 6300
  24. 122.85
  25. 30
  26. 2400
  27. 14
  28. 38
  29. 6241
  30. 720
  31. 142
  32. 21
  33. 90
  34. wrong
  35. 26
  36. 357
  37. 28
  38. 207
  39. 225
  40. 200

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