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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 122 · 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 × 15 =
  2. 2.57 × 15 =
  3. 3.32 × 4 =
  4. 4.550 − 16 =
  5. 5.4 + 2 + 8 + 2 =
  6. 6.₹72.65 − ₹19.75 =
  7. 7.1350 ÷ 50 =
  8. 8.32 × 8 =
  9. 9.282 + 49 =
  10. 10.16 + 32 + 62 + 55 =
  11. 11.435 + 59 =
  12. 12.39² =
  13. 13.17 × 11 =
  14. 14.Best estimate of 32 × 88? (a) 2700 (b) 5400 (c) 27000 (d) 270
  15. 15.437 − 69 =
  16. 16.175 + 18 =
  17. 17.14 × 12 =
  18. 18.₹19.05 + ₹24.40 =
  19. 19.Best estimate of 402 × 3? (a) 12000 (b) 120 (c) 2400 (d) 1200
  20. 20.Check with nines: 90 × 54 = 4860. Correct or wrong? (a) wrong (b) correct
  21. 21.₹59.10 − ₹12.45 =
  22. 22.91² =
  23. 23.Best estimate of 198 × 3? (a) 600 (b) 6000 (c) 1200 (d) 60
  24. 24.42 × 15 =
  25. 25.2 + 4 + 8 + 5 + 1 =
  26. 26.₹99.70 − ₹33.35 =
  27. 27.91 − 78 =
  28. 28.15 × 15 =
  29. 29.₹69.60 + ₹37.45 =
  30. 30.20% of 620 =
  31. 31.14 + 23 + 29 + 73 =
  32. 32.79 − 26 =
  33. 33.473 + 17 =
  34. 34.81² =
  35. 35.₹94.20 − ₹39.80 =
  36. 36.28 × 8 =
  37. 37.350 − 78 =
  38. 38.22 × 15 =
  39. 39.1275 ÷ 25 =
  40. 40.5% of 150 =

Answer key

  1. 225
  2. 855
  3. 128
  4. 534
  5. 16
  6. 52.9
  7. 27
  8. 256
  9. 331
  10. 165
  11. 494
  12. 1521
  13. 187
  14. 2700
  15. 368
  16. 193
  17. 168
  18. 43.45
  19. 1200
  20. correct
  21. 46.65
  22. 8281
  23. 600
  24. 630
  25. 20
  26. 66.35
  27. 13
  28. 225
  29. 107.05
  30. 124
  31. 139
  32. 53
  33. 490
  34. 6561
  35. 54.4
  36. 224
  37. 272
  38. 330
  39. 51
  40. 7.5

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