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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 749 · 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. 1.19² =
  2. 2.305 + 68 =
  3. 3.161 + 59 =
  4. 4.88 + 78 + 77 + 89 =
  5. 5.358 − 17 =
  6. 6.148 + 58 =
  7. 7.247 + 39 =
  8. 8.63 + 53 + 57 + 42 =
  9. 9.1 + 9 + 4 + 8 + 2 =
  10. 10.82 + 26 + 46 + 49 =
  11. 11.50 × 50 =
  12. 12.1 + 6 + 4 + 5 + 1 =
  13. 13.19 × 17 =
  14. 14.271 − 59 =
  15. 15.29 × 8 =
  16. 16.234 + 69 =
  17. 17.478 − 96 =
  18. 18.₹97.90 + ₹17.90 =
  19. 19.Check with nines: 26 × 90 = 2348. Correct or wrong? (a) correct (b) wrong
  20. 20.Best estimate of 69 × 49? (a) 7000 (b) 3500 (c) 35000 (d) 350
  21. 21.58 + 65 + 24 + 68 =
  22. 22.₹46.40 + ₹8.70 =
  23. 23.54 × 15 =
  24. 24.31² =
  25. 25.15 × 12 =
  26. 26.2 + 3 + 7 + 3 =
  27. 27.162 + 89 =
  28. 28.770 ÷ 5 =
  29. 29.Best estimate of 48 × 32? (a) 150 (b) 3000 (c) 15000 (d) 1500
  30. 30.451 − 38 =
  31. 31.Best estimate of 103 × 6? (a) 1200 (b) 6000 (c) 600 (d) 60
  32. 32.59² =
  33. 33.₹8.55 − ₹7.40 =
  34. 34.3 + 9 + 3 + 6 + 4 =
  35. 35.Best estimate of 71 × 58? (a) 420 (b) 4200 (c) 42000 (d) 8400
  36. 36.₹48.75 + ₹8.85 =
  37. 37.600 ÷ 5 =
  38. 38.279 + 98 =
  39. 39.347 − 16 =
  40. 40.269 + 27 =

Answer key

  1. 361
  2. 373
  3. 220
  4. 332
  5. 341
  6. 206
  7. 286
  8. 215
  9. 24
  10. 203
  11. 2500
  12. 17
  13. 323
  14. 212
  15. 232
  16. 303
  17. 382
  18. 115.8
  19. wrong
  20. 3500
  21. 215
  22. 55.1
  23. 810
  24. 961
  25. 180
  26. 15
  27. 251
  28. 154
  29. 1500
  30. 413
  31. 600
  32. 3481
  33. 1.15
  34. 25
  35. 4200
  36. 57.6
  37. 120
  38. 377
  39. 331
  40. 296

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