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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 135 · 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. 1.5 × 15 =
  2. 2.29 × 15 =
  3. 3.579 − 89 =
  4. 4.253 − 66 =
  5. 5.310 + 29 =
  6. 6.Check with nines: 764 + 638 = 1408. Correct or wrong? (a) correct (b) wrong
  7. 7.21² =
  8. 8.Best estimate of 49 × 39? (a) 20000 (b) 4000 (c) 2000 (d) 200
  9. 9.320 + 18 =
  10. 10.₹26.25 − ₹19.85 =
  11. 11.186 − 48 =
  12. 12.1400 ÷ 50 =
  13. 13.₹35.35 + ₹25.20 =
  14. 14.20% of 550 =
  15. 15.81 × 50 =
  16. 16.Check with nines: 34 × 52 = 1775. Correct or wrong? (a) wrong (b) correct
  17. 17.1150 ÷ 50 =
  18. 18.13 × 4 =
  19. 19.₹15.95 + ₹14.25 =
  20. 20.625 ÷ 25 =
  21. 21.385 ÷ 5 =
  22. 22.8 × 15 =
  23. 23.493 − 26 =
  24. 24.8 + 8 + 7 + 1 + 2 =
  25. 25.552 − 89 =
  26. 26.71 × 50 =
  27. 27.280 − 98 =
  28. 28.25 × 4 =
  29. 29.98 × 5 =
  30. 30.Best estimate of 21 × 29? (a) 1200 (b) 600 (c) 6000 (d) 60
  31. 31.125 − 38 =
  32. 32.61 × 8 =
  33. 33.62 × 5 =
  34. 34.268 + 69 =
  35. 35.69 × 5 =
  36. 36.18 × 11 =
  37. 37.₹50.45 + ₹5.30 =
  38. 38.489 − 66 =
  39. 39.280 + 17 =
  40. 40.₹43.20 + ₹43.75 =

Answer key

  1. 75
  2. 435
  3. 490
  4. 187
  5. 339
  6. wrong
  7. 441
  8. 2000
  9. 338
  10. 6.4
  11. 138
  12. 28
  13. 60.55
  14. 110
  15. 4050
  16. wrong
  17. 23
  18. 52
  19. 30.2
  20. 25
  21. 77
  22. 120
  23. 467
  24. 26
  25. 463
  26. 3550
  27. 182
  28. 100
  29. 490
  30. 600
  31. 87
  32. 488
  33. 310
  34. 337
  35. 345
  36. 198
  37. 55.75
  38. 423
  39. 297
  40. 86.95

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