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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 409 · 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. 1.475 ÷ 25 =
  2. 2.65 × 50 =
  3. 3.23 + 45 + 53 + 12 =
  4. 4.13 × 15 =
  5. 5.61² =
  6. 6.400 ÷ 5 =
  7. 7.29² =
  8. 8.57 + 26 + 61 + 77 =
  9. 9.90 − 69 =
  10. 10.₹10.30 + ₹37.75 =
  11. 11.459 + 28 =
  12. 12.5% of 660 =
  13. 13.323 − 37 =
  14. 14.77 + 84 + 52 + 11 =
  15. 15.1% of 20 =
  16. 16.₹74.30 + ₹10.25 =
  17. 17.₹83.65 + ₹37.90 =
  18. 18.374 − 38 =
  19. 19.300 ÷ 5 =
  20. 20.81 + 31 + 61 + 14 =
  21. 21.267 − 66 =
  22. 22.141 + 87 =
  23. 23.18 × 14 =
  24. 24.Best estimate of 21 × 91? (a) 180 (b) 18000 (c) 3600 (d) 1800
  25. 25.₹32.70 − ₹10.90 =
  26. 26.₹30.10 + ₹19.55 =
  27. 27.74 + 37 =
  28. 28.40 × 50 =
  29. 29.Best estimate of 32 × 62? (a) 1800 (b) 18000 (c) 3600 (d) 180
  30. 30.37 × 8 =
  31. 31.₹13.60 + ₹38.20 =
  32. 32.50 + 33 + 35 + 12 =
  33. 33.Best estimate of 28 × 78? (a) 240 (b) 4800 (c) 2400 (d) 24000
  34. 34.Check with nines: 44 × 68 = 2999. Correct or wrong? (a) correct (b) wrong
  35. 35.59² =
  36. 36.16 × 5 =
  37. 37.5 + 8 + 5 + 8 + 5 =
  38. 38.4 + 8 + 4 + 2 =
  39. 39.11 × 12 =
  40. 40.314 + 47 =

Answer key

  1. 19
  2. 3250
  3. 133
  4. 195
  5. 3721
  6. 80
  7. 841
  8. 221
  9. 21
  10. 48.05
  11. 487
  12. 33
  13. 286
  14. 224
  15. 0.2
  16. 84.55
  17. 121.55
  18. 336
  19. 60
  20. 187
  21. 201
  22. 228
  23. 252
  24. 1800
  25. 21.8
  26. 49.65
  27. 111
  28. 2000
  29. 1800
  30. 296
  31. 51.8
  32. 130
  33. 2400
  34. wrong
  35. 3481
  36. 80
  37. 31
  38. 18
  39. 132
  40. 361

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