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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 901 · 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.₹64.10 + ₹14.05 =
  2. 2.1950 ÷ 50 =
  3. 3.Best estimate of 22 × 22? (a) 4000 (b) 40 (c) 800 (d) 400
  4. 4.Best estimate of 598 × 9? (a) 5400 (b) 540 (c) 54000 (d) 10800
  5. 5.145 + 19 =
  6. 6.101 + 19 =
  7. 7.2 + 8 + 4 + 3 + 1 =
  8. 8.28 + 32 + 54 + 89 =
  9. 9.45 × 15 =
  10. 10.Check with nines: 79 × 89 = 7031. Correct or wrong? (a) correct (b) wrong
  11. 11.22 × 5 =
  12. 12.Best estimate of 99 × 4? (a) 400 (b) 4000 (c) 40 (d) 800
  13. 13.409 − 69 =
  14. 14.47 × 4 =
  15. 15.30 × 15 =
  16. 16.64 × 15 =
  17. 17.6 + 3 + 4 + 5 =
  18. 18.77 + 73 + 74 + 30 =
  19. 19.13 × 12 =
  20. 20.56 + 30 + 73 + 57 =
  21. 21.925 ÷ 25 =
  22. 22.5% of 450 =
  23. 23.6 + 6 + 3 + 7 =
  24. 24.425 ÷ 25 =
  25. 25.326 + 97 =
  26. 26.₹35.60 − ₹21.95 =
  27. 27.93 × 4 =
  28. 28.400 ÷ 50 =
  29. 29.107 + 28 =
  30. 30.135 ÷ 5 =
  31. 31.20 × 5 =
  32. 32.15% of 630 =
  33. 33.600 ÷ 50 =
  34. 34.₹52.55 + ₹8.05 =
  35. 35.2 + 1 + 9 + 4 =
  36. 36.311 − 76 =
  37. 37.8 + 9 + 2 + 9 + 8 =
  38. 38.1500 ÷ 25 =
  39. 39.40 × 5 =
  40. 40.267 − 87 =

Answer key

  1. 78.15
  2. 39
  3. 400
  4. 5400
  5. 164
  6. 120
  7. 18
  8. 203
  9. 675
  10. correct
  11. 110
  12. 400
  13. 340
  14. 188
  15. 450
  16. 960
  17. 18
  18. 254
  19. 156
  20. 216
  21. 37
  22. 22.5
  23. 22
  24. 17
  25. 423
  26. 13.65
  27. 372
  28. 8
  29. 135
  30. 27
  31. 100
  32. 94.5
  33. 12
  34. 60.6
  35. 16
  36. 235
  37. 36
  38. 60
  39. 200
  40. 180

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