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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 698 · 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. 1.478 + 67 =
  2. 2.13 × 12 =
  3. 3.95 × 50 =
  4. 4.4 + 1 + 5 + 5 + 1 =
  5. 5.78 + 13 + 61 + 14 =
  6. 6.Check with nines: 741 + 786 = 1529. Correct or wrong? (a) correct (b) wrong
  7. 7.₹40.15 − ₹36.75 =
  8. 8.447 − 56 =
  9. 9.7 + 3 + 3 + 4 =
  10. 10.690 ÷ 5 =
  11. 11.69² =
  12. 12.558 − 97 =
  13. 13.8 + 3 + 5 + 3 + 5 =
  14. 14.256 + 78 =
  15. 15.17 × 14 =
  16. 16.19² =
  17. 17.38 × 4 =
  18. 18.14 + 16 + 15 + 21 =
  19. 19.₹63.80 − ₹31.55 =
  20. 20.28 × 50 =
  21. 21.11 × 16 =
  22. 22.₹37.70 + ₹11.50 =
  23. 23.2 + 6 + 2 + 8 =
  24. 24.569 − 69 =
  25. 25.14 × 17 =
  26. 26.138 − 78 =
  27. 27.89² =
  28. 28.₹51.50 − ₹19.40 =
  29. 29.Best estimate of 397 × 4? (a) 1600 (b) 3200 (c) 16000 (d) 160
  30. 30.6 + 4 + 3 + 6 =
  31. 31.57 × 8 =
  32. 32.940 ÷ 5 =
  33. 33.450 ÷ 25 =
  34. 34.29 + 13 + 52 + 28 =
  35. 35.Check with nines: 838 + 425 = 1263. Correct or wrong? (a) wrong (b) correct
  36. 36.₹43.10 + ₹8.35 =
  37. 37.9 + 9 + 4 + 1 =
  38. 38.68 × 8 =
  39. 39.Check with nines: 400 + 661 = 1061. Correct or wrong? (a) correct (b) wrong
  40. 40.14 × 15 =

Answer key

  1. 545
  2. 156
  3. 4750
  4. 16
  5. 166
  6. wrong
  7. 3.4
  8. 391
  9. 17
  10. 138
  11. 4761
  12. 461
  13. 24
  14. 334
  15. 238
  16. 361
  17. 152
  18. 66
  19. 32.25
  20. 1400
  21. 176
  22. 49.2
  23. 18
  24. 500
  25. 238
  26. 60
  27. 7921
  28. 32.1
  29. 1600
  30. 19
  31. 456
  32. 188
  33. 18
  34. 122
  35. correct
  36. 51.45
  37. 23
  38. 544
  39. correct
  40. 210

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