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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 120 · 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. 1.11 × 15 =
  2. 2.63 + 57 + 53 + 68 =
  3. 3.430 + 48 =
  4. 4.Best estimate of 799 × 6? (a) 48000 (b) 4800 (c) 9600 (d) 480
  5. 5.32 × 15 =
  6. 6.₹20.75 + ₹25.45 =
  7. 7.₹98.05 − ₹32.10 =
  8. 8.60 × 5 =
  9. 9.750 ÷ 50 =
  10. 10.16 × 15 =
  11. 11.243 − 29 =
  12. 12.775 ÷ 25 =
  13. 13.2 + 5 + 9 + 2 + 5 =
  14. 14.11 × 18 =
  15. 15.9 + 5 + 1 + 2 =
  16. 16.Check with nines: 765 + 277 = 1041. Correct or wrong? (a) wrong (b) correct
  17. 17.89 + 78 =
  18. 18.Check with nines: 53 × 52 = 2756. Correct or wrong? (a) wrong (b) correct
  19. 19.Check with nines: 95 × 13 = 1235. Correct or wrong? (a) wrong (b) correct
  20. 20.Best estimate of 19 × 41? (a) 8000 (b) 80 (c) 1600 (d) 800
  21. 21.455 + 78 =
  22. 22.39² =
  23. 23.138 × 4 =
  24. 24.60 × 8 =
  25. 25.15 × 16 =
  26. 26.77 + 15 + 62 + 68 =
  27. 27.11 × 15 =
  28. 28.₹28.75 − ₹26.40 =
  29. 29.59² =
  30. 30.81² =
  31. 31.₹76.15 − ₹37.05 =
  32. 32.₹34.25 + ₹2.60 =
  33. 33.72 × 4 =
  34. 34.12 × 15 =
  35. 35.1700 ÷ 50 =
  36. 36.10% of 500 =
  37. 37.18 × 15 =
  38. 38.340 − 19 =
  39. 39.25% of 760 =
  40. 40.65 × 50 =

Answer key

  1. 165
  2. 241
  3. 478
  4. 4800
  5. 480
  6. 46.2
  7. 65.95
  8. 300
  9. 15
  10. 240
  11. 214
  12. 31
  13. 23
  14. 198
  15. 17
  16. wrong
  17. 167
  18. correct
  19. correct
  20. 800
  21. 533
  22. 1521
  23. 552
  24. 480
  25. 240
  26. 222
  27. 165
  28. 2.35
  29. 3481
  30. 6561
  31. 39.1
  32. 36.85
  33. 288
  34. 180
  35. 34
  36. 50
  37. 270
  38. 321
  39. 190
  40. 3250

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