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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 640 · 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. 1.32 × 5 =
  2. 2.5% of 180 =
  3. 3.850 ÷ 50 =
  4. 4.12 × 15 =
  5. 5.54 × 5 =
  6. 6.Check with nines: 65 × 66 = 4294. Correct or wrong? (a) correct (b) wrong
  7. 7.₹5.35 + ₹33.65 =
  8. 8.122 × 4 =
  9. 9.25 + 68 =
  10. 10.84 + 36 + 22 + 87 =
  11. 11.Best estimate of 31 × 39? (a) 2400 (b) 120 (c) 1200 (d) 12000
  12. 12.79² =
  13. 13.54 + 21 + 38 + 43 =
  14. 14.7 + 8 + 9 + 2 + 2 =
  15. 15.50% of 870 =
  16. 16.Check with nines: 226 + 901 = 1127. Correct or wrong? (a) correct (b) wrong
  17. 17.14 × 16 =
  18. 18.7 + 9 + 1 + 1 + 8 =
  19. 19.10% of 20 =
  20. 20.260 + 59 =
  21. 21.19² =
  22. 22.₹78.35 + ₹13.75 =
  23. 23.495 + 69 =
  24. 24.69² =
  25. 25.₹48.30 − ₹4.60 =
  26. 26.312 − 19 =
  27. 27.Check with nines: 605 + 613 = 1218. Correct or wrong? (a) correct (b) wrong
  28. 28.10% of 790 =
  29. 29.1600 ÷ 50 =
  30. 30.229 + 49 =
  31. 31.127 × 4 =
  32. 32.6 + 5 + 7 + 3 + 7 =
  33. 33.259 + 19 =
  34. 34.56 × 50 =
  35. 35.4 + 1 + 5 + 9 =
  36. 36.700 ÷ 50 =
  37. 37.52 × 15 =
  38. 38.59² =
  39. 39.89² =
  40. 40.239 − 87 =

Answer key

  1. 160
  2. 9
  3. 17
  4. 180
  5. 270
  6. wrong
  7. 39
  8. 488
  9. 93
  10. 229
  11. 1200
  12. 6241
  13. 156
  14. 28
  15. 435
  16. correct
  17. 224
  18. 26
  19. 2
  20. 319
  21. 361
  22. 92.1
  23. 564
  24. 4761
  25. 43.7
  26. 293
  27. correct
  28. 79
  29. 32
  30. 278
  31. 508
  32. 28
  33. 278
  34. 2800
  35. 19
  36. 14
  37. 780
  38. 3481
  39. 7921
  40. 152

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