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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 24 · 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. 1.89² =
  2. 2.Best estimate of 298 × 3? (a) 9000 (b) 1800 (c) 900 (d) 90
  3. 3.Best estimate of 72 × 62? (a) 420 (b) 4200 (c) 8400 (d) 42000
  4. 4.111 + 67 =
  5. 5.43 × 15 =
  6. 6.₹85.65 − ₹47.10 =
  7. 7.Best estimate of 31 × 62? (a) 3600 (b) 180 (c) 1800 (d) 18000
  8. 8.₹69.10 − ₹2.35 =
  9. 9.234 + 39 =
  10. 10.₹48.15 − ₹17.80 =
  11. 11.31 × 50 =
  12. 12.1% of 120 =
  13. 13.59² =
  14. 14.62 − 26 =
  15. 15.48 × 50 =
  16. 16.75 × 50 =
  17. 17.156 + 28 =
  18. 18.Best estimate of 28 × 39? (a) 1200 (b) 12000 (c) 120 (d) 2400
  19. 19.₹64.30 + ₹24.60 =
  20. 20.1700 ÷ 50 =
  21. 21.20% of 750 =
  22. 22.150 ÷ 50 =
  23. 23.39² =
  24. 24.52 × 15 =
  25. 25.14 × 15 =
  26. 26.7 + 8 + 5 + 9 + 5 =
  27. 27.₹90.60 − ₹9.35 =
  28. 28.79 × 5 =
  29. 29.77 × 5 =
  30. 30.12 + 27 + 57 + 77 =
  31. 31.₹24.40 − ₹12.30 =
  32. 32.69² =
  33. 33.60 × 15 =
  34. 34.17 × 18 =
  35. 35.₹62.15 + ₹12.20 =
  36. 36.2 + 7 + 3 + 9 + 3 =
  37. 37.11 × 15 =
  38. 38.29 × 50 =
  39. 39.43 × 15 =
  40. 40.₹69.20 + ₹21.65 =

Answer key

  1. 7921
  2. 900
  3. 4200
  4. 178
  5. 645
  6. 38.55
  7. 1800
  8. 66.75
  9. 273
  10. 30.35
  11. 1550
  12. 1.2
  13. 3481
  14. 36
  15. 2400
  16. 3750
  17. 184
  18. 1200
  19. 88.9
  20. 34
  21. 150
  22. 3
  23. 1521
  24. 780
  25. 210
  26. 34
  27. 81.25
  28. 395
  29. 385
  30. 173
  31. 12.1
  32. 4761
  33. 900
  34. 306
  35. 74.35
  36. 24
  37. 165
  38. 1450
  39. 645
  40. 90.85

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