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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 850 · 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.Best estimate of 197 × 9? (a) 1800 (b) 180 (c) 3600 (d) 18000
  2. 2.Check with nines: 57 × 20 = 1146. Correct or wrong? (a) correct (b) wrong
  3. 3.67 × 5 =
  4. 4.50% of 590 =
  5. 5.91² =
  6. 6.16 × 16 =
  7. 7.325 + 69 =
  8. 8.17 × 5 =
  9. 9.5 + 6 + 4 + 2 + 1 =
  10. 10.70 + 14 + 33 + 21 =
  11. 11.125 × 4 =
  12. 12.89² =
  13. 13.₹33.65 − ₹19.55 =
  14. 14.15 × 4 =
  15. 15.41 + 88 + 87 + 21 =
  16. 16.13 × 8 =
  17. 17.₹83.65 − ₹12.20 =
  18. 18.₹32.85 + ₹14.95 =
  19. 19.39² =
  20. 20.8 + 5 + 9 + 1 =
  21. 21.Check with nines: 632 + 515 = 1145. Correct or wrong? (a) wrong (b) correct
  22. 22.47 + 68 =
  23. 23.1% of 860 =
  24. 24.71² =
  25. 25.75 + 50 + 58 + 81 =
  26. 26.313 − 17 =
  27. 27.18 × 13 =
  28. 28.28 + 17 + 23 + 17 =
  29. 29.93 × 5 =
  30. 30.63 × 4 =
  31. 31.11 × 16 =
  32. 32.420 − 89 =
  33. 33.Check with nines: 39 × 18 = 702. Correct or wrong? (a) correct (b) wrong
  34. 34.7 + 2 + 1 + 3 + 3 =
  35. 35.68 + 76 + 55 + 46 =
  36. 36.5 + 9 + 1 + 7 =
  37. 37.15% of 440 =
  38. 38.10% of 110 =
  39. 39.3 + 3 + 7 + 3 =
  40. 40.89² =

Answer key

  1. 1800
  2. wrong
  3. 335
  4. 295
  5. 8281
  6. 256
  7. 394
  8. 85
  9. 18
  10. 138
  11. 500
  12. 7921
  13. 14.1
  14. 60
  15. 237
  16. 104
  17. 71.45
  18. 47.8
  19. 1521
  20. 23
  21. wrong
  22. 115
  23. 8.6
  24. 5041
  25. 264
  26. 296
  27. 234
  28. 85
  29. 465
  30. 252
  31. 176
  32. 331
  33. correct
  34. 16
  35. 245
  36. 22
  37. 66
  38. 11
  39. 16
  40. 7921

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