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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 412 · 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. 1.18 + 64 + 69 + 47 =
  2. 2.38 × 4 =
  3. 3.16 × 15 =
  4. 4.630 ÷ 5 =
  5. 5.Check with nines: 549 + 402 = 943. Correct or wrong? (a) correct (b) wrong
  6. 6.7 + 4 + 6 + 6 =
  7. 7.337 + 39 =
  8. 8.Check with nines: 85 × 70 = 5952. Correct or wrong? (a) correct (b) wrong
  9. 9.7 + 1 + 3 + 8 =
  10. 10.12 × 11 =
  11. 11.Check with nines: 24 × 78 = 1872. Correct or wrong? (a) wrong (b) correct
  12. 12.485 ÷ 5 =
  13. 13.46 + 46 + 67 + 89 =
  14. 14.37 × 15 =
  15. 15.14 × 13 =
  16. 16.79² =
  17. 17.29² =
  18. 18.1050 ÷ 25 =
  19. 19.11 × 19 =
  20. 20.51² =
  21. 21.2 + 7 + 3 + 9 =
  22. 22.9 + 1 + 7 + 3 + 7 =
  23. 23.433 − 36 =
  24. 24.137 × 4 =
  25. 25.250 ÷ 50 =
  26. 26.11 × 15 =
  27. 27.96 × 5 =
  28. 28.87 + 35 + 38 + 48 =
  29. 29.₹61.20 − ₹2.05 =
  30. 30.136 − 47 =
  31. 31.87 + 27 + 46 + 30 =
  32. 32.62 + 76 + 84 + 28 =
  33. 33.71² =
  34. 34.34 × 15 =
  35. 35.222 − 59 =
  36. 36.51² =
  37. 37.17 × 16 =
  38. 38.45 × 15 =
  39. 39.22 × 4 =
  40. 40.1300 ÷ 50 =

Answer key

  1. 198
  2. 152
  3. 240
  4. 126
  5. wrong
  6. 23
  7. 376
  8. wrong
  9. 19
  10. 132
  11. correct
  12. 97
  13. 248
  14. 555
  15. 182
  16. 6241
  17. 841
  18. 42
  19. 209
  20. 2601
  21. 21
  22. 27
  23. 397
  24. 548
  25. 5
  26. 165
  27. 480
  28. 208
  29. 59.15
  30. 89
  31. 190
  32. 250
  33. 5041
  34. 510
  35. 163
  36. 2601
  37. 272
  38. 675
  39. 88
  40. 26

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