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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 202 · 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.Check with nines: 35 × 97 = 3389. Correct or wrong? (a) correct (b) wrong
  2. 2.75 × 5 =
  3. 3.21 + 11 + 65 + 67 =
  4. 4.5% of 20 =
  5. 5.447 + 49 =
  6. 6.5% of 550 =
  7. 7.19 × 15 =
  8. 8.42 × 15 =
  9. 9.16 × 11 =
  10. 10.Check with nines: 539 + 407 = 953. Correct or wrong? (a) wrong (b) correct
  11. 11.54 × 15 =
  12. 12.1% of 450 =
  13. 13.37 × 15 =
  14. 14.8 + 5 + 3 + 7 =
  15. 15.220 − 67 =
  16. 16.1400 ÷ 25 =
  17. 17.81 + 49 =
  18. 18.₹60.25 − ₹30.35 =
  19. 19.15% of 340 =
  20. 20.Check with nines: 30 × 21 = 636. Correct or wrong? (a) wrong (b) correct
  21. 21.₹18.05 + ₹45.15 =
  22. 22.89² =
  23. 23.31 × 5 =
  24. 24.₹96.85 − ₹12.10 =
  25. 25.7 + 4 + 8 + 2 + 6 =
  26. 26.16 × 12 =
  27. 27.11 × 16 =
  28. 28.283 + 67 =
  29. 29.87 + 48 + 67 + 34 =
  30. 30.2 + 8 + 2 + 7 =
  31. 31.54 × 15 =
  32. 32.242 + 68 =
  33. 33.40 × 50 =
  34. 34.454 − 27 =
  35. 35.89 − 27 =
  36. 36.174 + 28 =
  37. 37.26 + 74 + 41 + 27 =
  38. 38.50 × 50 =
  39. 39.56 + 88 + 50 + 47 =
  40. 40.401 + 98 =

Answer key

  1. wrong
  2. 375
  3. 164
  4. 1
  5. 496
  6. 27.5
  7. 285
  8. 630
  9. 176
  10. wrong
  11. 810
  12. 4.5
  13. 555
  14. 23
  15. 153
  16. 56
  17. 130
  18. 29.9
  19. 51
  20. wrong
  21. 63.2
  22. 7921
  23. 155
  24. 84.75
  25. 27
  26. 192
  27. 176
  28. 350
  29. 236
  30. 19
  31. 810
  32. 310
  33. 2000
  34. 427
  35. 62
  36. 202
  37. 168
  38. 2500
  39. 241
  40. 499

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