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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 128 · 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. 1.15 × 13 =
  2. 2.42 × 15 =
  3. 3.19 × 12 =
  4. 4.1150 ÷ 50 =
  5. 5.38 + 59 + 72 + 57 =
  6. 6.267 − 59 =
  7. 7.Check with nines: 514 + 824 = 1345. Correct or wrong? (a) correct (b) wrong
  8. 8.142 − 16 =
  9. 9.50 × 15 =
  10. 10.20 × 15 =
  11. 11.Best estimate of 22 × 62? (a) 12000 (b) 2400 (c) 120 (d) 1200
  12. 12.Best estimate of 903 × 9? (a) 16200 (b) 8100 (c) 810 (d) 81000
  13. 13.255 + 17 =
  14. 14.362 + 28 =
  15. 15.34 × 4 =
  16. 16.72 × 5 =
  17. 17.60 + 35 + 22 + 32 =
  18. 18.₹45.80 − ₹29.60 =
  19. 19.49 × 4 =
  20. 20.34 × 50 =
  21. 21.15 + 12 + 28 + 11 =
  22. 22.43 × 15 =
  23. 23.₹64.10 − ₹38.80 =
  24. 24.94 × 5 =
  25. 25.1150 ÷ 50 =
  26. 26.13 + 19 + 51 + 89 =
  27. 27.4 + 5 + 5 + 5 =
  28. 28.16 × 16 =
  29. 29.460 − 59 =
  30. 30.Best estimate of 91 × 32? (a) 27000 (b) 270 (c) 5400 (d) 2700
  31. 31.329 − 36 =
  32. 32.550 − 26 =
  33. 33.505 ÷ 5 =
  34. 34.17 × 14 =
  35. 35.2 + 6 + 1 + 8 + 3 =
  36. 36.₹92.55 − ₹23.35 =
  37. 37.70 − 28 =
  38. 38.36 × 8 =
  39. 39.Check with nines: 644 + 199 = 845. Correct or wrong? (a) wrong (b) correct
  40. 40.₹46.20 − ₹4.95 =

Answer key

  1. 195
  2. 630
  3. 228
  4. 23
  5. 226
  6. 208
  7. wrong
  8. 126
  9. 750
  10. 300
  11. 1200
  12. 8100
  13. 272
  14. 390
  15. 136
  16. 360
  17. 149
  18. 16.2
  19. 196
  20. 1700
  21. 66
  22. 645
  23. 25.3
  24. 470
  25. 23
  26. 172
  27. 19
  28. 256
  29. 401
  30. 2700
  31. 293
  32. 524
  33. 101
  34. 238
  35. 20
  36. 69.2
  37. 42
  38. 288
  39. wrong
  40. 41.25

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