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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 854 · 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: 988 + 512 = 1496. Correct or wrong? (a) wrong (b) correct
  2. 2.25% of 400 =
  3. 3.Best estimate of 38 × 91? (a) 36000 (b) 7200 (c) 360 (d) 3600
  4. 4.169 + 88 =
  5. 5.Best estimate of 19 × 52? (a) 10000 (b) 100 (c) 1000 (d) 2000
  6. 6.₹99.25 + ₹20.50 =
  7. 7.25% of 700 =
  8. 8.44 + 26 + 61 + 49 =
  9. 9.₹73.80 − ₹14.60 =
  10. 10.414 − 67 =
  11. 11.434 + 27 =
  12. 12.18 × 19 =
  13. 13.16 × 15 =
  14. 14.₹71.15 − ₹49.60 =
  15. 15.51² =
  16. 16.10% of 610 =
  17. 17.175 + 37 =
  18. 18.₹94.20 + ₹23.15 =
  19. 19.37 × 8 =
  20. 20.83 × 50 =
  21. 21.20 × 15 =
  22. 22.₹80.75 + ₹17.80 =
  23. 23.247 − 57 =
  24. 24.36 + 80 + 12 + 39 =
  25. 25.₹57.50 − ₹3.25 =
  26. 26.60 × 15 =
  27. 27.59² =
  28. 28.32 × 4 =
  29. 29.1075 ÷ 25 =
  30. 30.₹36.25 + ₹48.20 =
  31. 31.9 + 8 + 1 + 7 =
  32. 32.23 × 15 =
  33. 33.49 × 5 =
  34. 34.4 + 8 + 2 + 6 =
  35. 35.Best estimate of 52 × 42? (a) 4000 (b) 2000 (c) 200 (d) 20000
  36. 36.1 + 1 + 1 + 9 =
  37. 37.60 × 15 =
  38. 38.583 − 18 =
  39. 39.60 + 86 + 34 + 32 =
  40. 40.274 − 99 =

Answer key

  1. wrong
  2. 100
  3. 3600
  4. 257
  5. 1000
  6. 119.75
  7. 175
  8. 180
  9. 59.2
  10. 347
  11. 461
  12. 342
  13. 240
  14. 21.55
  15. 2601
  16. 61
  17. 212
  18. 117.35
  19. 296
  20. 4150
  21. 300
  22. 98.55
  23. 190
  24. 167
  25. 54.25
  26. 900
  27. 3481
  28. 128
  29. 43
  30. 84.45
  31. 25
  32. 345
  33. 245
  34. 20
  35. 2000
  36. 12
  37. 900
  38. 565
  39. 212
  40. 175

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