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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 798 · 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.₹48.15 − ₹20.45 =
  2. 2.19² =
  3. 3.15% of 230 =
  4. 4.466 − 28 =
  5. 5.₹63.35 − ₹21.95 =
  6. 6.58 × 15 =
  7. 7.Best estimate of 69 × 49? (a) 350 (b) 7000 (c) 35000 (d) 3500
  8. 8.251 − 79 =
  9. 9.161 + 19 =
  10. 10.559 − 78 =
  11. 11.19 × 13 =
  12. 12.24 × 15 =
  13. 13.328 − 69 =
  14. 14.131 × 4 =
  15. 15.610 ÷ 5 =
  16. 16.675 ÷ 25 =
  17. 17.98 × 50 =
  18. 18.8 + 9 + 1 + 1 =
  19. 19.57 × 8 =
  20. 20.₹71.95 + ₹14.15 =
  21. 21.15% of 470 =
  22. 22.49 × 4 =
  23. 23.494 − 68 =
  24. 24.31² =
  25. 25.30 + 88 + 81 + 79 =
  26. 26.14 × 11 =
  27. 27.36 + 75 + 12 + 71 =
  28. 28.₹88.20 − ₹4.20 =
  29. 29.81² =
  30. 30.161 − 77 =
  31. 31.44 + 39 + 63 + 13 =
  32. 32.19² =
  33. 33.8 + 2 + 2 + 8 =
  34. 34.Check with nines: 15 × 60 = 894. Correct or wrong? (a) wrong (b) correct
  35. 35.19² =
  36. 36.17 × 15 =
  37. 37.408 − 27 =
  38. 38.76 × 5 =
  39. 39.80 + 42 + 87 + 12 =
  40. 40.159 − 38 =

Answer key

  1. 27.7
  2. 361
  3. 34.5
  4. 438
  5. 41.4
  6. 870
  7. 3500
  8. 172
  9. 180
  10. 481
  11. 247
  12. 360
  13. 259
  14. 524
  15. 122
  16. 27
  17. 4900
  18. 19
  19. 456
  20. 86.1
  21. 70.5
  22. 196
  23. 426
  24. 961
  25. 278
  26. 154
  27. 194
  28. 84
  29. 6561
  30. 84
  31. 159
  32. 361
  33. 20
  34. wrong
  35. 361
  36. 255
  37. 381
  38. 380
  39. 221
  40. 121

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