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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 378 · 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. 1.107 − 56 =
  2. 2.450 ÷ 25 =
  3. 3.1050 ÷ 50 =
  4. 4.225 ÷ 25 =
  5. 5.39² =
  6. 6.11 × 12 =
  7. 7.47 + 42 + 68 + 56 =
  8. 8.13 × 4 =
  9. 9.11 × 16 =
  10. 10.100 ÷ 5 =
  11. 11.45 + 62 + 77 + 58 =
  12. 12.36 + 12 + 75 + 69 =
  13. 13.14 + 84 + 20 + 26 =
  14. 14.598 − 58 =
  15. 15.150 × 4 =
  16. 16.₹79.20 + ₹6.90 =
  17. 17.Check with nines: 834 + 214 = 1048. Correct or wrong? (a) wrong (b) correct
  18. 18.16 × 12 =
  19. 19.38 × 5 =
  20. 20.15% of 80 =
  21. 21.57 × 15 =
  22. 22.21 × 5 =
  23. 23.18 × 18 =
  24. 24.14 × 11 =
  25. 25.950 ÷ 50 =
  26. 26.Best estimate of 403 × 3? (a) 2400 (b) 120 (c) 12000 (d) 1200
  27. 27.358 − 79 =
  28. 28.21² =
  29. 29.Check with nines: 95 × 32 = 3048. Correct or wrong? (a) correct (b) wrong
  30. 30.6 + 4 + 9 + 2 =
  31. 31.69² =
  32. 32.₹48.85 + ₹25.05 =
  33. 33.₹11.10 + ₹49.15 =
  34. 34.11 × 16 =
  35. 35.370 + 98 =
  36. 36.8 + 1 + 2 + 8 + 9 =
  37. 37.229 + 78 =
  38. 38.85 + 67 =
  39. 39.₹52.70 + ₹29.35 =
  40. 40.64 × 15 =

Answer key

  1. 51
  2. 18
  3. 21
  4. 9
  5. 1521
  6. 132
  7. 213
  8. 52
  9. 176
  10. 20
  11. 242
  12. 192
  13. 144
  14. 540
  15. 600
  16. 86.1
  17. correct
  18. 192
  19. 190
  20. 12
  21. 855
  22. 105
  23. 324
  24. 154
  25. 19
  26. 1200
  27. 279
  28. 441
  29. wrong
  30. 21
  31. 4761
  32. 73.9
  33. 60.25
  34. 176
  35. 468
  36. 28
  37. 307
  38. 152
  39. 82.05
  40. 960

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