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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 83 · 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. 1.78 + 49 + 68 + 33 =
  2. 2.Best estimate of 398 × 8? (a) 6400 (b) 32000 (c) 3200 (d) 320
  3. 3.19 × 5 =
  4. 4.54 + 97 =
  5. 5.52 × 5 =
  6. 6.3 + 6 + 9 + 1 + 2 =
  7. 7.265 ÷ 5 =
  8. 8.13 × 14 =
  9. 9.Check with nines: 716 + 298 = 1018. Correct or wrong? (a) correct (b) wrong
  10. 10.218 + 29 =
  11. 11.1% of 690 =
  12. 12.19 × 14 =
  13. 13.96 − 56 =
  14. 14.1 + 9 + 9 + 4 =
  15. 15.1% of 480 =
  16. 16.32 × 4 =
  17. 17.18 × 15 =
  18. 18.470 + 98 =
  19. 19.16 × 19 =
  20. 20.473 − 87 =
  21. 21.47 + 17 + 55 + 80 =
  22. 22.13 × 13 =
  23. 23.34 × 50 =
  24. 24.5% of 260 =
  25. 25.1 + 5 + 5 + 5 =
  26. 26.29² =
  27. 27.426 + 77 =
  28. 28.1% of 70 =
  29. 29.5 + 5 + 3 + 7 =
  30. 30.₹70.60 + ₹30.65 =
  31. 31.491 − 56 =
  32. 32.Best estimate of 98 × 3? (a) 300 (b) 3000 (c) 30 (d) 600
  33. 33.Check with nines: 13 × 68 = 887. Correct or wrong? (a) wrong (b) correct
  34. 34.74 − 18 =
  35. 35.24 × 15 =
  36. 36.490 + 28 =
  37. 37.168 + 87 =
  38. 38.33 × 8 =
  39. 39.46 × 15 =
  40. 40.280 − 76 =

Answer key

  1. 228
  2. 3200
  3. 95
  4. 151
  5. 260
  6. 21
  7. 53
  8. 182
  9. wrong
  10. 247
  11. 6.9
  12. 266
  13. 40
  14. 23
  15. 4.8
  16. 128
  17. 270
  18. 568
  19. 304
  20. 386
  21. 199
  22. 169
  23. 1700
  24. 13
  25. 16
  26. 841
  27. 503
  28. 0.7
  29. 20
  30. 101.25
  31. 435
  32. 300
  33. wrong
  34. 56
  35. 360
  36. 518
  37. 255
  38. 264
  39. 690
  40. 204

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