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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 968 · 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. 1.11 × 19 =
  2. 2.9 + 2 + 9 + 1 + 1 =
  3. 3.18 × 17 =
  4. 4.49² =
  5. 5.53 × 50 =
  6. 6.10% of 180 =
  7. 7.109 − 19 =
  8. 8.Best estimate of 602 × 3? (a) 180 (b) 3600 (c) 1800 (d) 18000
  9. 9.Check with nines: 50 × 89 = 4450. Correct or wrong? (a) correct (b) wrong
  10. 10.Best estimate of 48 × 82? (a) 400 (b) 40000 (c) 8000 (d) 4000
  11. 11.26 × 15 =
  12. 12.56 + 15 + 43 + 47 =
  13. 13.368 − 66 =
  14. 14.19 × 15 =
  15. 15.13 × 11 =
  16. 16.325 + 97 =
  17. 17.13 × 5 =
  18. 18.₹25.75 − ₹20.50 =
  19. 19.59 × 15 =
  20. 20.129 + 69 =
  21. 21.134 + 67 =
  22. 22.Check with nines: 68 × 24 = 1640. Correct or wrong? (a) correct (b) wrong
  23. 23.256 + 98 =
  24. 24.421 − 29 =
  25. 25.59² =
  26. 26.₹55.75 − ₹13.45 =
  27. 27.15 × 15 =
  28. 28.29² =
  29. 29.350 ÷ 5 =
  30. 30.79² =
  31. 31.378 − 78 =
  32. 32.47 + 27 =
  33. 33.18 × 17 =
  34. 34.408 + 17 =
  35. 35.547 − 78 =
  36. 36.Best estimate of 38 × 92? (a) 360 (b) 7200 (c) 36000 (d) 3600
  37. 37.214 + 67 =
  38. 38.₹42.60 − ₹20.65 =
  39. 39.9 × 15 =
  40. 40.507 − 36 =

Answer key

  1. 209
  2. 22
  3. 306
  4. 2401
  5. 2650
  6. 18
  7. 90
  8. 1800
  9. correct
  10. 4000
  11. 390
  12. 161
  13. 302
  14. 285
  15. 143
  16. 422
  17. 65
  18. 5.25
  19. 885
  20. 198
  21. 201
  22. wrong
  23. 354
  24. 392
  25. 3481
  26. 42.3
  27. 225
  28. 841
  29. 70
  30. 6241
  31. 300
  32. 74
  33. 306
  34. 425
  35. 469
  36. 3600
  37. 281
  38. 21.95
  39. 135
  40. 471

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