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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 646 · 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. 1.17 × 16 =
  2. 2.251 + 87 =
  3. 3.10 × 15 =
  4. 4.11 × 13 =
  5. 5.Check with nines: 35 × 15 = 532. Correct or wrong? (a) wrong (b) correct
  6. 6.28 × 15 =
  7. 7.21 + 50 + 54 + 84 =
  8. 8.4 + 3 + 7 + 1 + 7 =
  9. 9.18 × 14 =
  10. 10.126 − 79 =
  11. 11.1% of 490 =
  12. 12.9 + 2 + 1 + 4 + 1 =
  13. 13.Check with nines: 77 × 49 = 3773. Correct or wrong? (a) wrong (b) correct
  14. 14.₹46.20 − ₹42.80 =
  15. 15.14 + 53 + 71 + 14 =
  16. 16.80 × 5 =
  17. 17.192 − 66 =
  18. 18.60 + 28 =
  19. 19.₹81.60 − ₹28.50 =
  20. 20.88 × 5 =
  21. 21.6 + 7 + 3 + 8 + 4 =
  22. 22.Check with nines: 664 + 595 = 1264. Correct or wrong? (a) correct (b) wrong
  23. 23.Check with nines: 342 + 484 = 834. Correct or wrong? (a) wrong (b) correct
  24. 24.50 × 4 =
  25. 25.98 + 49 =
  26. 26.83 × 5 =
  27. 27.5% of 40 =
  28. 28.156 + 77 =
  29. 29.17 × 15 =
  30. 30.₹25.35 + ₹34.30 =
  31. 31.1450 ÷ 25 =
  32. 32.54 × 8 =
  33. 33.16 × 15 =
  34. 34.350 ÷ 50 =
  35. 35.2 + 5 + 9 + 1 =
  36. 36.83 + 26 + 65 + 79 =
  37. 37.16 × 5 =
  38. 38.105 + 58 =
  39. 39.221 − 87 =
  40. 40.58 + 27 + 84 + 88 =

Answer key

  1. 272
  2. 338
  3. 150
  4. 143
  5. wrong
  6. 420
  7. 209
  8. 22
  9. 252
  10. 47
  11. 4.9
  12. 17
  13. correct
  14. 3.4
  15. 152
  16. 400
  17. 126
  18. 88
  19. 53.1
  20. 440
  21. 28
  22. wrong
  23. wrong
  24. 200
  25. 147
  26. 415
  27. 2
  28. 233
  29. 255
  30. 59.65
  31. 58
  32. 432
  33. 240
  34. 7
  35. 17
  36. 253
  37. 80
  38. 163
  39. 134
  40. 257

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