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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 684 · 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. 1.89² =
  2. 2.55 + 47 + 89 + 81 =
  3. 3.79 × 5 =
  4. 4.25% of 240 =
  5. 5.97 + 18 =
  6. 6.38 + 25 + 11 + 66 =
  7. 7.Check with nines: 47 × 25 = 1175. Correct or wrong? (a) wrong (b) correct
  8. 8.₹46.05 − ₹6.75 =
  9. 9.20 + 34 + 56 + 42 =
  10. 10.91² =
  11. 11.₹29.70 + ₹10.85 =
  12. 12.397 + 49 =
  13. 13.17 × 13 =
  14. 14.91 × 4 =
  15. 15.17 × 16 =
  16. 16.20% of 470 =
  17. 17.74 + 74 + 88 + 30 =
  18. 18.20% of 70 =
  19. 19.405 − 76 =
  20. 20.259 + 29 =
  21. 21.392 − 47 =
  22. 22.905 ÷ 5 =
  23. 23.₹34.70 + ₹9.90 =
  24. 24.Best estimate of 98 × 3? (a) 600 (b) 3000 (c) 300 (d) 30
  25. 25.43 × 4 =
  26. 26.552 − 89 =
  27. 27.13 × 16 =
  28. 28.15 + 31 + 87 + 35 =
  29. 29.450 ÷ 25 =
  30. 30.₹36.15 + ₹35.15 =
  31. 31.48 × 15 =
  32. 32.61 × 15 =
  33. 33.19 × 16 =
  34. 34.18 × 12 =
  35. 35.472 − 67 =
  36. 36.990 ÷ 5 =
  37. 37.69² =
  38. 38.461 + 28 =
  39. 39.287 − 19 =
  40. 40.Check with nines: 59 × 26 = 1534. Correct or wrong? (a) wrong (b) correct

Answer key

  1. 7921
  2. 272
  3. 395
  4. 60
  5. 115
  6. 140
  7. correct
  8. 39.3
  9. 152
  10. 8281
  11. 40.55
  12. 446
  13. 221
  14. 364
  15. 272
  16. 94
  17. 266
  18. 14
  19. 329
  20. 288
  21. 345
  22. 181
  23. 44.6
  24. 300
  25. 172
  26. 463
  27. 208
  28. 168
  29. 18
  30. 71.3
  31. 720
  32. 915
  33. 304
  34. 216
  35. 405
  36. 198
  37. 4761
  38. 489
  39. 268
  40. correct

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