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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 433 · 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.Best estimate of 899 × 3? (a) 27000 (b) 5400 (c) 2700 (d) 270
  2. 2.15% of 790 =
  3. 3.₹21.90 + ₹19.85 =
  4. 4.Best estimate of 501 × 5? (a) 2500 (b) 25000 (c) 5000 (d) 250
  5. 5.11 × 12 =
  6. 6.257 + 79 =
  7. 7.322 − 47 =
  8. 8.40 × 50 =
  9. 9.44 × 15 =
  10. 10.73 + 38 =
  11. 11.3 + 6 + 2 + 3 + 8 =
  12. 12.508 − 78 =
  13. 13.96 × 5 =
  14. 14.9 + 9 + 4 + 1 =
  15. 15.87 + 87 =
  16. 16.₹46.15 + ₹44.75 =
  17. 17.98 × 4 =
  18. 18.3 + 7 + 2 + 7 =
  19. 19.166 − 78 =
  20. 20.79² =
  21. 21.₹18.40 − ₹6.50 =
  22. 22.31 × 15 =
  23. 23.₹53.85 − ₹28.70 =
  24. 24.15% of 510 =
  25. 25.200 ÷ 50 =
  26. 26.85 + 74 + 80 + 29 =
  27. 27.91 × 50 =
  28. 28.2 + 5 + 8 + 9 + 6 =
  29. 29.Check with nines: 804 + 829 = 1630. Correct or wrong? (a) wrong (b) correct
  30. 30.Check with nines: 697 + 815 = 1520. Correct or wrong? (a) correct (b) wrong
  31. 31.19 × 15 =
  32. 32.15% of 740 =
  33. 33.14 + 83 + 45 + 20 =
  34. 34.11 × 18 =
  35. 35.19 × 12 =
  36. 36.900 ÷ 50 =
  37. 37.25 × 5 =
  38. 38.273 − 38 =
  39. 39.73 + 40 + 19 + 12 =
  40. 40.264 + 58 =

Answer key

  1. 2700
  2. 118.5
  3. 41.75
  4. 2500
  5. 132
  6. 336
  7. 275
  8. 2000
  9. 660
  10. 111
  11. 22
  12. 430
  13. 480
  14. 23
  15. 174
  16. 90.9
  17. 392
  18. 19
  19. 88
  20. 6241
  21. 11.9
  22. 465
  23. 25.15
  24. 76.5
  25. 4
  26. 268
  27. 4550
  28. 30
  29. wrong
  30. wrong
  31. 285
  32. 111
  33. 162
  34. 198
  35. 228
  36. 18
  37. 125
  38. 235
  39. 144
  40. 322

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