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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 182 · 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.Check with nines: 71 × 29 = 2059. Correct or wrong? (a) wrong (b) correct
  2. 2.Best estimate of 903 × 6? (a) 5400 (b) 10800 (c) 540 (d) 54000
  3. 3.29 + 27 + 74 + 54 =
  4. 4.42 × 15 =
  5. 5.₹45.35 − ₹5.55 =
  6. 6.15% of 540 =
  7. 7.41² =
  8. 8.39² =
  9. 9.402 + 88 =
  10. 10.306 − 86 =
  11. 11.114 − 36 =
  12. 12.50% of 700 =
  13. 13.16 × 5 =
  14. 14.462 + 38 =
  15. 15.86 − 46 =
  16. 16.2 + 9 + 1 + 9 + 1 =
  17. 17.83 + 32 + 45 + 38 =
  18. 18.34 × 5 =
  19. 19.2 + 5 + 6 + 8 + 6 =
  20. 20.3 + 3 + 4 + 7 =
  21. 21.82 + 98 =
  22. 22.326 + 28 =
  23. 23.446 + 89 =
  24. 24.13 × 19 =
  25. 25.6 + 9 + 4 + 8 =
  26. 26.3 + 1 + 3 + 7 =
  27. 27.Best estimate of 603 × 3? (a) 1800 (b) 18000 (c) 3600 (d) 180
  28. 28.₹60.50 − ₹16.30 =
  29. 29.241 + 79 =
  30. 30.29² =
  31. 31.203 − 77 =
  32. 32.74 + 42 + 37 + 36 =
  33. 33.80 × 50 =
  34. 34.25 × 8 =
  35. 35.476 − 76 =
  36. 36.110 + 69 =
  37. 37.Best estimate of 498 × 7? (a) 3500 (b) 7000 (c) 35000 (d) 350
  38. 38.539 − 17 =
  39. 39.1150 ÷ 25 =
  40. 40.₹25.95 − ₹14.35 =

Answer key

  1. correct
  2. 5400
  3. 184
  4. 630
  5. 39.8
  6. 81
  7. 1681
  8. 1521
  9. 490
  10. 220
  11. 78
  12. 350
  13. 80
  14. 500
  15. 40
  16. 22
  17. 198
  18. 170
  19. 27
  20. 17
  21. 180
  22. 354
  23. 535
  24. 247
  25. 27
  26. 14
  27. 1800
  28. 44.2
  29. 320
  30. 841
  31. 126
  32. 189
  33. 4000
  34. 200
  35. 400
  36. 179
  37. 3500
  38. 522
  39. 46
  40. 11.6

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