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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 912 · 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. 1.25% of 120 =
  2. 2.Best estimate of 901 × 7? (a) 63000 (b) 630 (c) 6300 (d) 12600
  3. 3.451 + 89 =
  4. 4.19² =
  5. 5.63 × 15 =
  6. 6.27 × 15 =
  7. 7.69² =
  8. 8.489 − 57 =
  9. 9.15% of 640 =
  10. 10.₹50.45 − ₹42.35 =
  11. 11.5 × 15 =
  12. 12.₹56.40 + ₹20.95 =
  13. 13.650 ÷ 50 =
  14. 14.Best estimate of 603 × 3? (a) 18000 (b) 1800 (c) 3600 (d) 180
  15. 15.25 × 5 =
  16. 16.Check with nines: 385 + 299 = 684. Correct or wrong? (a) wrong (b) correct
  17. 17.116 + 27 =
  18. 18.13 + 23 + 34 + 57 =
  19. 19.357 + 97 =
  20. 20.2 + 5 + 5 + 9 + 9 =
  21. 21.31 × 50 =
  22. 22.51 + 18 + 32 + 18 =
  23. 23.1100 ÷ 25 =
  24. 24.484 − 39 =
  25. 25.6 + 4 + 9 + 1 =
  26. 26.2 + 1 + 1 + 8 + 6 =
  27. 27.136 + 27 =
  28. 28.11 × 11 =
  29. 29.₹68.60 + ₹46.90 =
  30. 30.505 ÷ 5 =
  31. 31.399 + 37 =
  32. 32.17 × 4 =
  33. 33.Check with nines: 733 + 509 = 1242. Correct or wrong? (a) correct (b) wrong
  34. 34.1125 ÷ 25 =
  35. 35.21² =
  36. 36.19² =
  37. 37.₹56.35 + ₹38.90 =
  38. 38.12 + 12 + 35 + 12 =
  39. 39.₹27.20 − ₹21.80 =
  40. 40.81 × 50 =

Answer key

  1. 30
  2. 6300
  3. 540
  4. 361
  5. 945
  6. 405
  7. 4761
  8. 432
  9. 96
  10. 8.1
  11. 75
  12. 77.35
  13. 13
  14. 1800
  15. 125
  16. correct
  17. 143
  18. 127
  19. 454
  20. 30
  21. 1550
  22. 119
  23. 44
  24. 445
  25. 20
  26. 18
  27. 163
  28. 121
  29. 115.5
  30. 101
  31. 436
  32. 68
  33. correct
  34. 45
  35. 441
  36. 361
  37. 95.25
  38. 71
  39. 5.4
  40. 4050

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