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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 951 · 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. 1.29² =
  2. 2.Check with nines: 73 × 41 = 3000. Correct or wrong? (a) wrong (b) correct
  3. 3.520 − 46 =
  4. 4.Best estimate of 88 × 78? (a) 720 (b) 72000 (c) 14400 (d) 7200
  5. 5.407 + 58 =
  6. 6.10% of 80 =
  7. 7.82 × 50 =
  8. 8.₹75.75 − ₹28.85 =
  9. 9.300 ÷ 5 =
  10. 10.1% of 590 =
  11. 11.9 + 8 + 7 + 1 =
  12. 12.18 × 17 =
  13. 13.25 × 8 =
  14. 14.545 − 37 =
  15. 15.1 + 4 + 4 + 1 + 6 =
  16. 16.85 × 5 =
  17. 17.9 + 4 + 1 + 3 =
  18. 18.277 + 69 =
  19. 19.53 × 8 =
  20. 20.55 × 50 =
  21. 21.188 − 37 =
  22. 22.10% of 490 =
  23. 23.8 + 5 + 2 + 1 + 8 =
  24. 24.4 + 5 + 6 + 4 + 9 =
  25. 25.31 × 15 =
  26. 26.32 × 4 =
  27. 27.467 + 99 =
  28. 28.310 − 88 =
  29. 29.19 × 17 =
  30. 30.115 × 4 =
  31. 31.95 ÷ 5 =
  32. 32.1% of 840 =
  33. 33.279 − 66 =
  34. 34.1% of 120 =
  35. 35.16 × 11 =
  36. 36.Check with nines: 70 × 17 = 1192. Correct or wrong? (a) wrong (b) correct
  37. 37.12 × 16 =
  38. 38.3 + 9 + 9 + 1 =
  39. 39.352 + 67 =
  40. 40.478 − 76 =

Answer key

  1. 841
  2. wrong
  3. 474
  4. 7200
  5. 465
  6. 8
  7. 4100
  8. 46.9
  9. 60
  10. 5.9
  11. 25
  12. 306
  13. 200
  14. 508
  15. 16
  16. 425
  17. 17
  18. 346
  19. 424
  20. 2750
  21. 151
  22. 49
  23. 24
  24. 28
  25. 465
  26. 128
  27. 566
  28. 222
  29. 323
  30. 460
  31. 19
  32. 8.4
  33. 213
  34. 1.2
  35. 176
  36. wrong
  37. 192
  38. 22
  39. 419
  40. 402

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