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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 541 · 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.Check with nines: 61 × 22 = 1342. Correct or wrong? (a) correct (b) wrong
  2. 2.5 + 8 + 8 + 7 + 2 =
  3. 3.57 + 37 =
  4. 4.39² =
  5. 5.1% of 570 =
  6. 6.61 + 31 + 17 + 84 =
  7. 7.109 × 4 =
  8. 8.75 × 50 =
  9. 9.4 + 1 + 2 + 7 + 3 =
  10. 10.211 − 27 =
  11. 11.7 + 8 + 3 + 6 =
  12. 12.10% of 90 =
  13. 13.10% of 880 =
  14. 14.14 × 15 =
  15. 15.1600 ÷ 50 =
  16. 16.125 ÷ 25 =
  17. 17.151 − 16 =
  18. 18.₹14.40 + ₹42.20 =
  19. 19.₹57.15 − ₹13.45 =
  20. 20.41 + 23 + 19 + 56 =
  21. 21.15 × 15 =
  22. 22.54 × 8 =
  23. 23.175 − 49 =
  24. 24.17 + 20 + 59 + 65 =
  25. 25.65 − 17 =
  26. 26.9 + 1 + 5 + 4 =
  27. 27.Check with nines: 216 + 141 = 357. Correct or wrong? (a) wrong (b) correct
  28. 28.52 + 17 =
  29. 29.63 − 57 =
  30. 30.8 + 1 + 1 + 8 + 9 =
  31. 31.Check with nines: 422 + 302 = 724. Correct or wrong? (a) wrong (b) correct
  32. 32.339 + 67 =
  33. 33.89² =
  34. 34.66 + 77 + 32 + 21 =
  35. 35.₹46.65 + ₹19.45 =
  36. 36.18 × 5 =
  37. 37.53 × 15 =
  38. 38.14 × 15 =
  39. 39.Check with nines: 99 × 53 = 5250. Correct or wrong? (a) correct (b) wrong
  40. 40.128 × 4 =

Answer key

  1. correct
  2. 30
  3. 94
  4. 1521
  5. 5.7
  6. 193
  7. 436
  8. 3750
  9. 17
  10. 184
  11. 24
  12. 9
  13. 88
  14. 210
  15. 32
  16. 5
  17. 135
  18. 56.6
  19. 43.7
  20. 139
  21. 225
  22. 432
  23. 126
  24. 161
  25. 48
  26. 19
  27. correct
  28. 69
  29. 6
  30. 27
  31. correct
  32. 406
  33. 7921
  34. 196
  35. 66.1
  36. 90
  37. 795
  38. 210
  39. wrong
  40. 512

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