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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 577 · 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. 1.175 − 48 =
  2. 2.7 × 15 =
  3. 3.7 + 2 + 1 + 4 + 3 =
  4. 4.2 + 4 + 6 + 6 + 6 =
  5. 5.8 + 4 + 3 + 6 =
  6. 6.120 × 4 =
  7. 7.51² =
  8. 8.123 − 26 =
  9. 9.62 × 50 =
  10. 10.₹87.85 − ₹37.35 =
  11. 11.Check with nines: 19 × 96 = 1822. Correct or wrong? (a) correct (b) wrong
  12. 12.1050 ÷ 50 =
  13. 13.26 + 70 + 14 + 36 =
  14. 14.15 × 15 =
  15. 15.Best estimate of 402 × 5? (a) 200 (b) 2000 (c) 20000 (d) 4000
  16. 16.11 × 16 =
  17. 17.15% of 630 =
  18. 18.5 + 4 + 6 + 3 + 2 =
  19. 19.348 + 69 =
  20. 20.19 + 75 + 15 + 16 =
  21. 21.413 − 37 =
  22. 22.₹23.85 + ₹23.40 =
  23. 23.98 × 5 =
  24. 24.2 + 7 + 6 + 3 =
  25. 25.20 × 15 =
  26. 26.Best estimate of 202 × 7? (a) 14000 (b) 1400 (c) 2800 (d) 140
  27. 27.19 × 12 =
  28. 28.₹49.80 − ₹25.95 =
  29. 29.65 × 5 =
  30. 30.2000 ÷ 50 =
  31. 31.250 − 37 =
  32. 32.₹19.45 − ₹8.75 =
  33. 33.1 + 4 + 6 + 6 =
  34. 34.27 × 8 =
  35. 35.78 + 65 + 35 + 30 =
  36. 36.₹37.50 − ₹20.40 =
  37. 37.20% of 780 =
  38. 38.115 − 37 =
  39. 39.9 + 1 + 2 + 2 + 1 =
  40. 40.6 + 7 + 4 + 6 + 6 =

Answer key

  1. 127
  2. 105
  3. 17
  4. 24
  5. 21
  6. 480
  7. 2601
  8. 97
  9. 3100
  10. 50.5
  11. wrong
  12. 21
  13. 146
  14. 225
  15. 2000
  16. 176
  17. 94.5
  18. 20
  19. 417
  20. 125
  21. 376
  22. 47.25
  23. 490
  24. 18
  25. 300
  26. 1400
  27. 228
  28. 23.85
  29. 325
  30. 40
  31. 213
  32. 10.7
  33. 17
  34. 216
  35. 208
  36. 17.1
  37. 156
  38. 78
  39. 15
  40. 29

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