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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 137 · 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.₹29.60 − ₹3.35 =
  2. 2.Best estimate of 198 × 3? (a) 6000 (b) 600 (c) 1200 (d) 60
  3. 3.₹46.15 − ₹34.75 =
  4. 4.Best estimate of 31 × 49? (a) 3000 (b) 150 (c) 15000 (d) 1500
  5. 5.180 ÷ 5 =
  6. 6.7 + 3 + 2 + 8 =
  7. 7.30 × 50 =
  8. 8.66 + 56 + 55 + 55 =
  9. 9.Check with nines: 31 × 45 = 1395. Correct or wrong? (a) wrong (b) correct
  10. 10.52 × 4 =
  11. 11.157 + 97 =
  12. 12.91² =
  13. 13.99 − 98 =
  14. 14.570 − 28 =
  15. 15.500 − 78 =
  16. 16.1 + 6 + 7 + 4 + 9 =
  17. 17.49² =
  18. 18.13 × 19 =
  19. 19.14 × 16 =
  20. 20.271 − 76 =
  21. 21.625 ÷ 25 =
  22. 22.14 × 18 =
  23. 23.₹58.20 − ₹36.55 =
  24. 24.Check with nines: 72 × 86 = 6197. Correct or wrong? (a) correct (b) wrong
  25. 25.600 ÷ 50 =
  26. 26.40 × 15 =
  27. 27.1175 ÷ 25 =
  28. 28.40 × 8 =
  29. 29.4 + 5 + 5 + 6 =
  30. 30.₹94.90 + ₹23.90 =
  31. 31.19 × 14 =
  32. 32.79² =
  33. 33.1 + 6 + 8 + 4 + 6 =
  34. 34.Check with nines: 89 × 75 = 6675. Correct or wrong? (a) wrong (b) correct
  35. 35.₹39.65 + ₹13.25 =
  36. 36.₹74.10 − ₹23.50 =
  37. 37.15 × 13 =
  38. 38.231 + 79 =
  39. 39.81² =
  40. 40.14 × 5 =

Answer key

  1. 26.25
  2. 600
  3. 11.4
  4. 1500
  5. 36
  6. 20
  7. 1500
  8. 232
  9. correct
  10. 208
  11. 254
  12. 8281
  13. 1
  14. 542
  15. 422
  16. 27
  17. 2401
  18. 247
  19. 224
  20. 195
  21. 25
  22. 252
  23. 21.65
  24. wrong
  25. 12
  26. 600
  27. 47
  28. 320
  29. 20
  30. 118.8
  31. 266
  32. 6241
  33. 25
  34. correct
  35. 52.9
  36. 50.6
  37. 195
  38. 310
  39. 6561
  40. 70

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