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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 345 · 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. 1.48 × 15 =
  2. 2.76 × 5 =
  3. 3.121 − 58 =
  4. 4.33 × 15 =
  5. 5.84 + 33 + 20 + 43 =
  6. 6.20% of 750 =
  7. 7.70 + 33 + 12 + 58 =
  8. 8.25% of 600 =
  9. 9.453 + 79 =
  10. 10.466 + 27 =
  11. 11.86 − 39 =
  12. 12.800 ÷ 50 =
  13. 13.₹75.45 + ₹12.75 =
  14. 14.Check with nines: 421 + 638 = 1056. Correct or wrong? (a) wrong (b) correct
  15. 15.320 − 19 =
  16. 16.185 + 58 =
  17. 17.152 + 38 =
  18. 18.10% of 450 =
  19. 19.21² =
  20. 20.10% of 30 =
  21. 21.105 + 79 =
  22. 22.138 × 4 =
  23. 23.293 − 57 =
  24. 24.Best estimate of 499 × 3? (a) 3000 (b) 150 (c) 1500 (d) 15000
  25. 25.Check with nines: 39 × 29 = 1131. Correct or wrong? (a) correct (b) wrong
  26. 26.104 × 4 =
  27. 27.7 + 6 + 4 + 2 =
  28. 28.Best estimate of 499 × 6? (a) 6000 (b) 3000 (c) 30000 (d) 300
  29. 29.32 × 8 =
  30. 30.64 × 15 =
  31. 31.59 × 5 =
  32. 32.12 × 16 =
  33. 33.86 − 38 =
  34. 34.Check with nines: 40 × 90 = 3600. Correct or wrong? (a) wrong (b) correct
  35. 35.500 ÷ 25 =
  36. 36.1150 ÷ 50 =
  37. 37.30 + 47 =
  38. 38.213 − 96 =
  39. 39.143 × 4 =
  40. 40.7 × 15 =

Answer key

  1. 720
  2. 380
  3. 63
  4. 495
  5. 180
  6. 150
  7. 173
  8. 150
  9. 532
  10. 493
  11. 47
  12. 16
  13. 88.2
  14. wrong
  15. 301
  16. 243
  17. 190
  18. 45
  19. 441
  20. 3
  21. 184
  22. 552
  23. 236
  24. 1500
  25. correct
  26. 416
  27. 19
  28. 3000
  29. 256
  30. 960
  31. 295
  32. 192
  33. 48
  34. correct
  35. 20
  36. 23
  37. 77
  38. 117
  39. 572
  40. 105

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