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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 48 · 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. 1.7 + 7 + 3 + 3 =
  2. 2.Best estimate of 98 × 8? (a) 8000 (b) 800 (c) 1600 (d) 80
  3. 3.2 + 1 + 3 + 9 + 3 =
  4. 4.₹35.95 + ₹20.30 =
  5. 5.43 × 15 =
  6. 6.9 + 3 + 2 + 1 + 5 =
  7. 7.Best estimate of 198 × 4? (a) 800 (b) 1600 (c) 80 (d) 8000
  8. 8.25% of 890 =
  9. 9.81² =
  10. 10.16 × 18 =
  11. 11.1200 ÷ 50 =
  12. 12.₹59.40 − ₹10.40 =
  13. 13.227 + 78 =
  14. 14.1% of 580 =
  15. 15.31² =
  16. 16.22 + 42 + 15 + 32 =
  17. 17.116 + 98 =
  18. 18.293 − 36 =
  19. 19.12 × 14 =
  20. 20.900 ÷ 25 =
  21. 21.16 × 14 =
  22. 22.₹75.30 + ₹10.30 =
  23. 23.29² =
  24. 24.22 + 12 + 36 + 11 =
  25. 25.5% of 270 =
  26. 26.93 − 49 =
  27. 27.1200 ÷ 25 =
  28. 28.31² =
  29. 29.₹40.20 − ₹32.35 =
  30. 30.534 − 79 =
  31. 31.50% of 590 =
  32. 32.86 − 48 =
  33. 33.73 + 47 + 87 + 20 =
  34. 34.70 + 67 =
  35. 35.13 × 18 =
  36. 36.11 × 12 =
  37. 37.38 × 15 =
  38. 38.30 × 5 =
  39. 39.Best estimate of 799 × 9? (a) 14400 (b) 7200 (c) 720 (d) 72000
  40. 40.Best estimate of 51 × 71? (a) 35000 (b) 3500 (c) 7000 (d) 350

Answer key

  1. 20
  2. 800
  3. 18
  4. 56.25
  5. 645
  6. 20
  7. 800
  8. 222.5
  9. 6561
  10. 288
  11. 24
  12. 49
  13. 305
  14. 5.8
  15. 961
  16. 111
  17. 214
  18. 257
  19. 168
  20. 36
  21. 224
  22. 85.6
  23. 841
  24. 81
  25. 13.5
  26. 44
  27. 48
  28. 961
  29. 7.85
  30. 455
  31. 295
  32. 38
  33. 227
  34. 137
  35. 234
  36. 132
  37. 570
  38. 150
  39. 7200
  40. 3500

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