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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 840 · 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. 1.5 + 2 + 5 + 4 + 2 =
  2. 2.3 + 3 + 6 + 5 + 7 =
  3. 3.75 + 12 + 22 + 32 =
  4. 4.83 + 59 + 52 + 19 =
  5. 5.26 × 5 =
  6. 6.1 + 9 + 1 + 4 =
  7. 7.201 − 77 =
  8. 8.15 × 18 =
  9. 9.125 − 78 =
  10. 10.484 − 96 =
  11. 11.3 + 3 + 7 + 9 + 9 =
  12. 12.57 + 82 + 62 + 73 =
  13. 13.12 × 15 =
  14. 14.₹67.65 + ₹41.05 =
  15. 15.64 × 15 =
  16. 16.14 × 8 =
  17. 17.68 + 73 + 21 + 14 =
  18. 18.485 − 68 =
  19. 19.20% of 210 =
  20. 20.25 × 50 =
  21. 21.Check with nines: 27 × 22 = 588. Correct or wrong? (a) wrong (b) correct
  22. 22.1 + 4 + 1 + 7 + 9 =
  23. 23.4 + 7 + 9 + 3 =
  24. 24.1% of 100 =
  25. 25.91² =
  26. 26.129 × 4 =
  27. 27.₹94.45 + ₹21.45 =
  28. 28.Best estimate of 52 × 78? (a) 40000 (b) 400 (c) 4000 (d) 8000
  29. 29.35 + 19 =
  30. 30.154 − 57 =
  31. 31.8 + 8 + 2 + 1 =
  32. 32.14 × 12 =
  33. 33.29² =
  34. 34.12 × 13 =
  35. 35.222 − 36 =
  36. 36.Best estimate of 21 × 41? (a) 80 (b) 1600 (c) 8000 (d) 800
  37. 37.66 + 23 + 84 + 21 =
  38. 38.22 × 8 =
  39. 39.70 × 8 =
  40. 40.14 × 13 =

Answer key

  1. 18
  2. 24
  3. 141
  4. 213
  5. 130
  6. 15
  7. 124
  8. 270
  9. 47
  10. 388
  11. 31
  12. 274
  13. 180
  14. 108.7
  15. 960
  16. 112
  17. 176
  18. 417
  19. 42
  20. 1250
  21. wrong
  22. 22
  23. 23
  24. 1
  25. 8281
  26. 516
  27. 115.9
  28. 4000
  29. 54
  30. 97
  31. 19
  32. 168
  33. 841
  34. 156
  35. 186
  36. 800
  37. 194
  38. 176
  39. 560
  40. 182

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