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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 379 · 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: 48 × 57 = 2743. Correct or wrong? (a) correct (b) wrong
  2. 2.₹27.10 − ₹14.55 =
  3. 3.18 × 12 =
  4. 4.52 × 8 =
  5. 5.₹59.15 − ₹21.50 =
  6. 6.44 × 8 =
  7. 7.1550 ÷ 50 =
  8. 8.23 × 50 =
  9. 9.Best estimate of 302 × 3? (a) 900 (b) 90 (c) 9000 (d) 1800
  10. 10.3 + 1 + 7 + 9 + 2 =
  11. 11.266 − 76 =
  12. 12.41² =
  13. 13.525 − 19 =
  14. 14.498 + 28 =
  15. 15.61² =
  16. 16.261 + 98 =
  17. 17.₹41.85 − ₹34.40 =
  18. 18.51 × 15 =
  19. 19.95 × 50 =
  20. 20.1125 ÷ 25 =
  21. 21.74 × 8 =
  22. 22.16 × 15 =
  23. 23.373 − 46 =
  24. 24.191 − 67 =
  25. 25.542 − 86 =
  26. 26.42 × 8 =
  27. 27.1% of 900 =
  28. 28.62 − 39 =
  29. 29.6 + 6 + 4 + 1 =
  30. 30.Best estimate of 19 × 79? (a) 16000 (b) 160 (c) 1600 (d) 3200
  31. 31.₹42.30 − ₹8.80 =
  32. 32.₹35.55 + ₹33.85 =
  33. 33.₹83.10 + ₹20.75 =
  34. 34.26 + 48 =
  35. 35.322 − 26 =
  36. 36.1 + 8 + 2 + 5 + 8 =
  37. 37.₹70.60 + ₹4.20 =
  38. 38.91 + 99 =
  39. 39.80 × 5 =
  40. 40.37 + 28 + 56 + 54 =

Answer key

  1. wrong
  2. 12.55
  3. 216
  4. 416
  5. 37.65
  6. 352
  7. 31
  8. 1150
  9. 900
  10. 22
  11. 190
  12. 1681
  13. 506
  14. 526
  15. 3721
  16. 359
  17. 7.45
  18. 765
  19. 4750
  20. 45
  21. 592
  22. 240
  23. 327
  24. 124
  25. 456
  26. 336
  27. 9
  28. 23
  29. 17
  30. 1600
  31. 33.5
  32. 69.4
  33. 103.85
  34. 74
  35. 296
  36. 24
  37. 74.8
  38. 190
  39. 400
  40. 175

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