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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 464 · 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. 1.15% of 430 =
  2. 2.379 − 86 =
  3. 3.Check with nines: 89 × 43 = 3828. Correct or wrong? (a) correct (b) wrong
  4. 4.Best estimate of 91 × 59? (a) 54000 (b) 540 (c) 5400 (d) 10800
  5. 5.53 + 65 + 27 + 82 =
  6. 6.500 ÷ 5 =
  7. 7.50% of 150 =
  8. 8.56 × 5 =
  9. 9.387 − 69 =
  10. 10.343 + 29 =
  11. 11.Check with nines: 14 × 17 = 245. Correct or wrong? (a) wrong (b) correct
  12. 12.69 + 39 =
  13. 13.8 + 2 + 9 + 3 + 1 =
  14. 14.4 + 6 + 3 + 7 =
  15. 15.1 + 5 + 1 + 8 + 9 =
  16. 16.81 + 28 + 64 + 18 =
  17. 17.158 − 27 =
  18. 18.11 × 16 =
  19. 19.353 − 37 =
  20. 20.50% of 290 =
  21. 21.29² =
  22. 22.45 × 15 =
  23. 23.Check with nines: 37 × 33 = 1218. Correct or wrong? (a) wrong (b) correct
  24. 24.89² =
  25. 25.3 + 2 + 8 + 9 + 2 =
  26. 26.68 × 4 =
  27. 27.82 × 5 =
  28. 28.239 − 26 =
  29. 29.33 × 50 =
  30. 30.378 + 89 =
  31. 31.29² =
  32. 32.1% of 630 =
  33. 33.74 × 5 =
  34. 34.136 + 19 =
  35. 35.159 × 4 =
  36. 36.₹48.05 − ₹39.65 =
  37. 37.57 + 49 =
  38. 38.Best estimate of 21 × 68? (a) 2800 (b) 140 (c) 14000 (d) 1400
  39. 39.9 + 1 + 1 + 4 =
  40. 40.15% of 200 =

Answer key

  1. 64.5
  2. 293
  3. wrong
  4. 5400
  5. 227
  6. 100
  7. 75
  8. 280
  9. 318
  10. 372
  11. wrong
  12. 108
  13. 23
  14. 20
  15. 24
  16. 191
  17. 131
  18. 176
  19. 316
  20. 145
  21. 841
  22. 675
  23. wrong
  24. 7921
  25. 24
  26. 272
  27. 410
  28. 213
  29. 1650
  30. 467
  31. 841
  32. 6.3
  33. 370
  34. 155
  35. 636
  36. 8.4
  37. 106
  38. 1400
  39. 15
  40. 30

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