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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 330 · 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. 1.300 ÷ 25 =
  2. 2.13 × 18 =
  3. 3.9 + 5 + 9 + 2 + 1 =
  4. 4.3 + 7 + 8 + 2 =
  5. 5.6 + 3 + 7 + 7 =
  6. 6.13 × 8 =
  7. 7.8 + 3 + 2 + 7 =
  8. 8.9 × 15 =
  9. 9.5 + 9 + 8 + 8 + 5 =
  10. 10.420 − 49 =
  11. 11.79² =
  12. 12.6 + 3 + 1 + 9 =
  13. 13.263 + 77 =
  14. 14.2 + 1 + 8 + 9 + 1 =
  15. 15.29² =
  16. 16.229 + 79 =
  17. 17.596 − 48 =
  18. 18.Check with nines: 61 × 21 = 1281. Correct or wrong? (a) correct (b) wrong
  19. 19.₹28.80 + ₹46.90 =
  20. 20.Best estimate of 61 × 82? (a) 9600 (b) 480 (c) 48000 (d) 4800
  21. 21.28 × 8 =
  22. 22.12 × 18 =
  23. 23.Best estimate of 71 × 29? (a) 210 (b) 4200 (c) 21000 (d) 2100
  24. 24.33 × 15 =
  25. 25.Best estimate of 51 × 61? (a) 300 (b) 3000 (c) 30000 (d) 6000
  26. 26.₹60.30 + ₹4.70 =
  27. 27.57 + 81 + 43 + 86 =
  28. 28.81² =
  29. 29.49 × 15 =
  30. 30.462 − 68 =
  31. 31.Best estimate of 52 × 71? (a) 7000 (b) 35000 (c) 350 (d) 3500
  32. 32.39 × 8 =
  33. 33.44 × 15 =
  34. 34.53 × 4 =
  35. 35.19 × 13 =
  36. 36.441 + 79 =
  37. 37.49 + 88 =
  38. 38.218 + 37 =
  39. 39.421 + 38 =
  40. 40.15% of 70 =

Answer key

  1. 12
  2. 234
  3. 26
  4. 20
  5. 23
  6. 104
  7. 20
  8. 135
  9. 35
  10. 371
  11. 6241
  12. 19
  13. 340
  14. 21
  15. 841
  16. 308
  17. 548
  18. correct
  19. 75.7
  20. 4800
  21. 224
  22. 216
  23. 2100
  24. 495
  25. 3000
  26. 65
  27. 267
  28. 6561
  29. 735
  30. 394
  31. 3500
  32. 312
  33. 660
  34. 212
  35. 247
  36. 520
  37. 137
  38. 255
  39. 459
  40. 10.5

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