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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 612 · 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. 1.42 × 15 =
  2. 2.16 × 11 =
  3. 3.26 × 15 =
  4. 4.Best estimate of 69 × 52? (a) 350 (b) 7000 (c) 3500 (d) 35000
  5. 5.Check with nines: 20 × 95 = 1908. Correct or wrong? (a) correct (b) wrong
  6. 6.5% of 130 =
  7. 7.44 × 8 =
  8. 8.1% of 590 =
  9. 9.201 + 57 =
  10. 10.22 × 5 =
  11. 11.₹7.50 + ₹11.80 =
  12. 12.800 ÷ 50 =
  13. 13.9 + 6 + 4 + 3 + 1 =
  14. 14.325 ÷ 25 =
  15. 15.Check with nines: 70 × 79 = 5532. Correct or wrong? (a) wrong (b) correct
  16. 16.17 × 15 =
  17. 17.975 ÷ 25 =
  18. 18.₹86.80 − ₹6.20 =
  19. 19.41² =
  20. 20.81² =
  21. 21.₹44.05 − ₹39.05 =
  22. 22.38 × 5 =
  23. 23.77 × 50 =
  24. 24.1% of 250 =
  25. 25.36 × 4 =
  26. 26.17 × 13 =
  27. 27.1200 ÷ 50 =
  28. 28.₹75.25 + ₹43.70 =
  29. 29.Best estimate of 88 × 69? (a) 6300 (b) 12600 (c) 63000 (d) 630
  30. 30.79 + 78 =
  31. 31.13 × 18 =
  32. 32.7 + 6 + 4 + 4 + 6 =
  33. 33.17 + 49 + 40 + 55 =
  34. 34.43 + 78 + 58 + 16 =
  35. 35.1250 ÷ 50 =
  36. 36.81 + 35 + 23 + 26 =
  37. 37.230 − 16 =
  38. 38.755 ÷ 5 =
  39. 39.250 ÷ 50 =
  40. 40.20 + 51 + 41 + 11 =

Answer key

  1. 630
  2. 176
  3. 390
  4. 3500
  5. wrong
  6. 6.5
  7. 352
  8. 5.9
  9. 258
  10. 110
  11. 19.3
  12. 16
  13. 23
  14. 13
  15. wrong
  16. 255
  17. 39
  18. 80.6
  19. 1681
  20. 6561
  21. 5
  22. 190
  23. 3850
  24. 2.5
  25. 144
  26. 221
  27. 24
  28. 118.95
  29. 6300
  30. 157
  31. 234
  32. 27
  33. 161
  34. 195
  35. 25
  36. 165
  37. 214
  38. 151
  39. 5
  40. 123

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