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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 42 · 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. 1.26 + 62 + 74 + 59 =
  2. 2.13 × 11 =
  3. 3.190 − 36 =
  4. 4.Best estimate of 28 × 18? (a) 60 (b) 6000 (c) 600 (d) 1200
  5. 5.Best estimate of 48 × 22? (a) 100 (b) 2000 (c) 10000 (d) 1000
  6. 6.70 × 5 =
  7. 7.1% of 100 =
  8. 8.94 − 66 =
  9. 9.6 × 15 =
  10. 10.69² =
  11. 11.4 + 3 + 9 + 7 + 7 =
  12. 12.Check with nines: 552 + 827 = 1373. Correct or wrong? (a) correct (b) wrong
  13. 13.66 × 8 =
  14. 14.11 × 11 =
  15. 15.4 + 3 + 6 + 6 =
  16. 16.5 + 3 + 3 + 7 + 2 =
  17. 17.20 × 5 =
  18. 18.70 + 88 + 14 + 62 =
  19. 19.125 × 4 =
  20. 20.50% of 300 =
  21. 21.49 + 67 + 82 + 83 =
  22. 22.62 × 15 =
  23. 23.1250 ÷ 50 =
  24. 24.52 × 50 =
  25. 25.18 × 13 =
  26. 26.10% of 30 =
  27. 27.15 × 15 =
  28. 28.350 ÷ 50 =
  29. 29.13 × 18 =
  30. 30.21 + 35 + 76 + 24 =
  31. 31.1200 ÷ 50 =
  32. 32.25 × 15 =
  33. 33.34 × 5 =
  34. 34.740 ÷ 5 =
  35. 35.216 + 98 =
  36. 36.90 ÷ 5 =
  37. 37.16 × 15 =
  38. 38.71² =
  39. 39.14 × 14 =
  40. 40.43 × 15 =

Answer key

  1. 221
  2. 143
  3. 154
  4. 600
  5. 1000
  6. 350
  7. 1
  8. 28
  9. 90
  10. 4761
  11. 30
  12. wrong
  13. 528
  14. 121
  15. 19
  16. 20
  17. 100
  18. 234
  19. 500
  20. 150
  21. 281
  22. 930
  23. 25
  24. 2600
  25. 234
  26. 3
  27. 225
  28. 7
  29. 234
  30. 156
  31. 24
  32. 375
  33. 170
  34. 148
  35. 314
  36. 18
  37. 240
  38. 5041
  39. 196
  40. 645

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