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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 57 · 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. 1.248 − 17 =
  2. 2.2000 ÷ 50 =
  3. 3.58 × 8 =
  4. 4.31 × 15 =
  5. 5.81² =
  6. 6.₹94.40 + ₹37.35 =
  7. 7.9 + 2 + 8 + 8 =
  8. 8.392 − 98 =
  9. 9.33 + 28 =
  10. 10.2 + 9 + 5 + 8 + 2 =
  11. 11.5 + 5 + 5 + 3 =
  12. 12.60 + 16 + 36 + 82 =
  13. 13.5% of 790 =
  14. 14.28 × 8 =
  15. 15.9 + 2 + 7 + 7 + 3 =
  16. 16.8 + 9 + 2 + 2 =
  17. 17.6 + 6 + 6 + 5 + 4 =
  18. 18.99 × 4 =
  19. 19.405 − 86 =
  20. 20.29 × 8 =
  21. 21.Check with nines: 174 + 328 = 502. Correct or wrong? (a) correct (b) wrong
  22. 22.62 − 47 =
  23. 23.202 − 29 =
  24. 24.59² =
  25. 25.130 + 49 =
  26. 26.31² =
  27. 27.6 × 15 =
  28. 28.1 + 9 + 9 + 5 =
  29. 29.18 × 19 =
  30. 30.Check with nines: 288 + 629 = 920. Correct or wrong? (a) correct (b) wrong
  31. 31.1% of 120 =
  32. 32.3 + 7 + 6 + 7 + 2 =
  33. 33.25% of 740 =
  34. 34.487 − 59 =
  35. 35.Best estimate of 19 × 91? (a) 180 (b) 1800 (c) 18000 (d) 3600
  36. 36.11 × 15 =
  37. 37.Check with nines: 23 × 97 = 2228. Correct or wrong? (a) wrong (b) correct
  38. 38.566 − 96 =
  39. 39.5 + 6 + 4 + 1 =
  40. 40.₹33.45 + ₹22.70 =

Answer key

  1. 231
  2. 40
  3. 464
  4. 465
  5. 6561
  6. 131.75
  7. 27
  8. 294
  9. 61
  10. 26
  11. 18
  12. 194
  13. 39.5
  14. 224
  15. 28
  16. 21
  17. 27
  18. 396
  19. 319
  20. 232
  21. correct
  22. 15
  23. 173
  24. 3481
  25. 179
  26. 961
  27. 90
  28. 24
  29. 342
  30. wrong
  31. 1.2
  32. 25
  33. 185
  34. 428
  35. 1800
  36. 165
  37. wrong
  38. 470
  39. 16
  40. 56.15

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