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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 694 · 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. 1.2 + 4 + 8 + 2 + 6 =
  2. 2.15 × 13 =
  3. 3.28 + 21 + 68 + 75 =
  4. 4.24 + 14 + 79 + 88 =
  5. 5.1050 ÷ 50 =
  6. 6.17 × 18 =
  7. 7.Check with nines: 69 × 83 = 5733. Correct or wrong? (a) wrong (b) correct
  8. 8.21² =
  9. 9.12 × 19 =
  10. 10.365 + 29 =
  11. 11.₹37.80 − ₹10.35 =
  12. 12.₹87.90 − ₹17.60 =
  13. 13.296 + 88 =
  14. 14.Best estimate of 72 × 28? (a) 2100 (b) 4200 (c) 210 (d) 21000
  15. 15.1 + 7 + 2 + 3 =
  16. 16.₹9.60 + ₹24.15 =
  17. 17.9 + 5 + 5 + 9 =
  18. 18.41² =
  19. 19.465 − 88 =
  20. 20.8 + 5 + 8 + 5 + 5 =
  21. 21.69 + 87 + 21 + 81 =
  22. 22.81² =
  23. 23.351 + 97 =
  24. 24.18 × 19 =
  25. 25.Best estimate of 18 × 91? (a) 180 (b) 1800 (c) 18000 (d) 3600
  26. 26.126 + 78 =
  27. 27.₹61.60 + ₹24.90 =
  28. 28.34 + 36 + 35 + 41 =
  29. 29.50% of 100 =
  30. 30.Best estimate of 72 × 31? (a) 210 (b) 2100 (c) 4200 (d) 21000
  31. 31.508 − 86 =
  32. 32.5% of 740 =
  33. 33.27 × 15 =
  34. 34.15 × 19 =
  35. 35.₹62.05 − ₹41.50 =
  36. 36.3 + 1 + 8 + 7 + 9 =
  37. 37.40 × 15 =
  38. 38.16 × 17 =
  39. 39.63 × 15 =
  40. 40.5 + 5 + 7 + 3 =

Answer key

  1. 22
  2. 195
  3. 192
  4. 205
  5. 21
  6. 306
  7. wrong
  8. 441
  9. 228
  10. 394
  11. 27.45
  12. 70.3
  13. 384
  14. 2100
  15. 13
  16. 33.75
  17. 28
  18. 1681
  19. 377
  20. 31
  21. 258
  22. 6561
  23. 448
  24. 342
  25. 1800
  26. 204
  27. 86.5
  28. 146
  29. 50
  30. 2100
  31. 422
  32. 37
  33. 405
  34. 285
  35. 20.55
  36. 28
  37. 600
  38. 272
  39. 945
  40. 20

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