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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 734 · 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. 1.283 − 47 =
  2. 2.Best estimate of 21 × 31? (a) 600 (b) 1200 (c) 60 (d) 6000
  3. 3.76 + 51 + 24 + 27 =
  4. 4.7 + 3 + 3 + 7 + 1 =
  5. 5.51² =
  6. 6.400 ÷ 25 =
  7. 7.13 × 16 =
  8. 8.429 + 79 =
  9. 9.₹47.30 + ₹23.55 =
  10. 10.30 × 8 =
  11. 11.16 × 13 =
  12. 12.36 × 50 =
  13. 13.4 + 8 + 2 + 1 =
  14. 14.50% of 260 =
  15. 15.80 + 70 + 57 + 37 =
  16. 16.30 × 8 =
  17. 17.Best estimate of 199 × 3? (a) 1200 (b) 6000 (c) 60 (d) 600
  18. 18.289 + 58 =
  19. 19.3 + 1 + 7 + 3 =
  20. 20.89² =
  21. 21.321 − 37 =
  22. 22.24 + 68 + 25 + 82 =
  23. 23.5 + 9 + 8 + 2 + 1 =
  24. 24.212 + 98 =
  25. 25.15 × 15 =
  26. 26.29² =
  27. 27.7 + 7 + 1 + 3 =
  28. 28.57 × 50 =
  29. 29.₹54.65 − ₹12.85 =
  30. 30.445 + 48 =
  31. 31.17 × 19 =
  32. 32.₹65.95 + ₹45.85 =
  33. 33.20% of 650 =
  34. 34.341 + 88 =
  35. 35.56 × 5 =
  36. 36.1 + 6 + 9 + 3 =
  37. 37.Check with nines: 51 × 38 = 1944. Correct or wrong? (a) correct (b) wrong
  38. 38.5% of 150 =
  39. 39.438 + 97 =
  40. 40.37 × 8 =

Answer key

  1. 236
  2. 600
  3. 178
  4. 21
  5. 2601
  6. 16
  7. 208
  8. 508
  9. 70.85
  10. 240
  11. 208
  12. 1800
  13. 15
  14. 130
  15. 244
  16. 240
  17. 600
  18. 347
  19. 14
  20. 7921
  21. 284
  22. 199
  23. 25
  24. 310
  25. 225
  26. 841
  27. 18
  28. 2850
  29. 41.8
  30. 493
  31. 323
  32. 111.8
  33. 130
  34. 429
  35. 280
  36. 19
  37. wrong
  38. 7.5
  39. 535
  40. 296

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