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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 584 · 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. 1.34 × 50 =
  2. 2.409 + 29 =
  3. 3.63 + 47 + 76 + 50 =
  4. 4.164 − 37 =
  5. 5.11 × 14 =
  6. 6.91² =
  7. 7.₹85.20 + ₹11.55 =
  8. 8.19 × 16 =
  9. 9.33 × 8 =
  10. 10.433 − 88 =
  11. 11.8 + 7 + 4 + 2 =
  12. 12.26 × 50 =
  13. 13.463 − 69 =
  14. 14.₹81.80 + ₹20.70 =
  15. 15.88 + 50 + 22 + 18 =
  16. 16.Check with nines: 375 + 535 = 910. Correct or wrong? (a) wrong (b) correct
  17. 17.59 × 15 =
  18. 18.451 + 87 =
  19. 19.15 × 14 =
  20. 20.119 + 18 =
  21. 21.29² =
  22. 22.91² =
  23. 23.5 × 15 =
  24. 24.569 − 98 =
  25. 25.13 × 13 =
  26. 26.92 × 5 =
  27. 27.162 − 27 =
  28. 28.212 − 69 =
  29. 29.62 × 15 =
  30. 30.₹55.25 − ₹13.20 =
  31. 31.Check with nines: 438 + 948 = 1384. Correct or wrong? (a) wrong (b) correct
  32. 32.136 + 19 =
  33. 33.Check with nines: 869 + 783 = 1652. Correct or wrong? (a) correct (b) wrong
  34. 34.1 + 8 + 9 + 1 =
  35. 35.297 − 27 =
  36. 36.14 × 19 =
  37. 37.7 × 15 =
  38. 38.9 + 5 + 5 + 1 =
  39. 39.51 + 34 + 37 + 44 =
  40. 40.20 + 33 + 29 + 12 =

Answer key

  1. 1700
  2. 438
  3. 236
  4. 127
  5. 154
  6. 8281
  7. 96.75
  8. 304
  9. 264
  10. 345
  11. 21
  12. 1300
  13. 394
  14. 102.5
  15. 178
  16. correct
  17. 885
  18. 538
  19. 210
  20. 137
  21. 841
  22. 8281
  23. 75
  24. 471
  25. 169
  26. 460
  27. 135
  28. 143
  29. 930
  30. 42.05
  31. wrong
  32. 155
  33. correct
  34. 19
  35. 270
  36. 266
  37. 105
  38. 20
  39. 166
  40. 94

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