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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 154 · 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. 1.111 × 4 =
  2. 2.700 ÷ 50 =
  3. 3.24 + 16 + 52 + 65 =
  4. 4.10 × 15 =
  5. 5.5% of 240 =
  6. 6.17 × 8 =
  7. 7.₹76.50 + ₹3.05 =
  8. 8.Check with nines: 523 + 343 = 866. Correct or wrong? (a) wrong (b) correct
  9. 9.19 × 14 =
  10. 10.401 + 88 =
  11. 11.116 × 4 =
  12. 12.Best estimate of 78 × 21? (a) 16000 (b) 160 (c) 1600 (d) 3200
  13. 13.218 − 36 =
  14. 14.11 × 12 =
  15. 15.13 × 8 =
  16. 16.428 + 49 =
  17. 17.50 × 8 =
  18. 18.55 × 8 =
  19. 19.59² =
  20. 20.52 − 47 =
  21. 21.496 − 27 =
  22. 22.110 + 48 =
  23. 23.5% of 370 =
  24. 24.548 − 18 =
  25. 25.Best estimate of 71 × 18? (a) 140 (b) 14000 (c) 1400 (d) 2800
  26. 26.366 + 38 =
  27. 27.562 − 56 =
  28. 28.Check with nines: 51 × 19 = 969. Correct or wrong? (a) wrong (b) correct
  29. 29.25% of 210 =
  30. 30.9 + 1 + 9 + 8 =
  31. 31.1200 ÷ 50 =
  32. 32.39² =
  33. 33.29² =
  34. 34.25% of 570 =
  35. 35.6 + 1 + 4 + 9 =
  36. 36.51 × 8 =
  37. 37.1 + 6 + 2 + 2 + 4 =
  38. 38.840 ÷ 5 =
  39. 39.Best estimate of 39 × 41? (a) 16000 (b) 1600 (c) 160 (d) 3200
  40. 40.22 × 8 =

Answer key

  1. 444
  2. 14
  3. 157
  4. 150
  5. 12
  6. 136
  7. 79.55
  8. correct
  9. 266
  10. 489
  11. 464
  12. 1600
  13. 182
  14. 132
  15. 104
  16. 477
  17. 400
  18. 440
  19. 3481
  20. 5
  21. 469
  22. 158
  23. 18.5
  24. 530
  25. 1400
  26. 404
  27. 506
  28. correct
  29. 52.5
  30. 27
  31. 24
  32. 1521
  33. 841
  34. 142.5
  35. 20
  36. 408
  37. 15
  38. 168
  39. 1600
  40. 176

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