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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 558 · 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: 148 + 961 = 1109. Correct or wrong? (a) wrong (b) correct
  2. 2.40 + 65 + 72 + 67 =
  3. 3.382 − 49 =
  4. 4.18 × 14 =
  5. 5.250 ÷ 50 =
  6. 6.12 × 15 =
  7. 7.16 × 15 =
  8. 8.54 × 5 =
  9. 9.13 × 16 =
  10. 10.3 + 7 + 1 + 3 =
  11. 11.5 × 15 =
  12. 12.19 × 18 =
  13. 13.350 + 79 =
  14. 14.₹11.30 − ₹9.65 =
  15. 15.363 + 67 =
  16. 16.56 × 8 =
  17. 17.10% of 180 =
  18. 18.41 × 15 =
  19. 19.560 − 99 =
  20. 20.Best estimate of 88 × 32? (a) 5400 (b) 270 (c) 27000 (d) 2700
  21. 21.18 × 15 =
  22. 22.₹41.30 + ₹5.45 =
  23. 23.Best estimate of 98 × 7? (a) 700 (b) 7000 (c) 1400 (d) 70
  24. 24.88 + 43 + 23 + 70 =
  25. 25.19 × 8 =
  26. 26.16 × 11 =
  27. 27.1250 ÷ 50 =
  28. 28.₹97.20 + ₹14.05 =
  29. 29.₹28.20 − ₹8.30 =
  30. 30.57 + 19 =
  31. 31.18 × 15 =
  32. 32.Check with nines: 168 + 670 = 838. Correct or wrong? (a) wrong (b) correct
  33. 33.Check with nines: 30 × 65 = 1955. Correct or wrong? (a) wrong (b) correct
  34. 34.11 × 15 =
  35. 35.13 + 15 + 14 + 30 =
  36. 36.52 × 50 =
  37. 37.8 × 15 =
  38. 38.127 + 47 =
  39. 39.4 × 15 =
  40. 40.1 + 9 + 3 + 7 + 4 =

Answer key

  1. correct
  2. 244
  3. 333
  4. 252
  5. 5
  6. 180
  7. 240
  8. 270
  9. 208
  10. 14
  11. 75
  12. 342
  13. 429
  14. 1.65
  15. 430
  16. 448
  17. 18
  18. 615
  19. 461
  20. 2700
  21. 270
  22. 46.75
  23. 700
  24. 224
  25. 152
  26. 176
  27. 25
  28. 111.25
  29. 19.9
  30. 76
  31. 270
  32. correct
  33. wrong
  34. 165
  35. 72
  36. 2600
  37. 120
  38. 174
  39. 60
  40. 24

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