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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 147 · 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. 1.160 × 4 =
  2. 2.314 − 57 =
  3. 3.69² =
  4. 4.₹43.05 − ₹21.50 =
  5. 5.91² =
  6. 6.35 × 15 =
  7. 7.41 × 15 =
  8. 8.Check with nines: 553 + 929 = 1482. Correct or wrong? (a) correct (b) wrong
  9. 9.39² =
  10. 10.328 + 37 =
  11. 11.₹17.30 − ₹10.35 =
  12. 12.1% of 90 =
  13. 13.17 × 16 =
  14. 14.242 + 79 =
  15. 15.9 + 3 + 7 + 6 =
  16. 16.67 + 47 =
  17. 17.44 × 15 =
  18. 18.89² =
  19. 19.228 − 18 =
  20. 20.77 × 50 =
  21. 21.Check with nines: 33 × 33 = 1084. Correct or wrong? (a) wrong (b) correct
  22. 22.45 × 15 =
  23. 23.69 × 5 =
  24. 24.₹78.90 + ₹2.30 =
  25. 25.44 × 15 =
  26. 26.138 + 27 =
  27. 27.200 ÷ 25 =
  28. 28.50% of 290 =
  29. 29.132 − 28 =
  30. 30.14 × 15 =
  31. 31.720 ÷ 5 =
  32. 32.9 + 7 + 7 + 3 + 3 =
  33. 33.Check with nines: 19 × 18 = 339. Correct or wrong? (a) wrong (b) correct
  34. 34.9 + 2 + 2 + 8 + 4 =
  35. 35.550 ÷ 5 =
  36. 36.39² =
  37. 37.54 × 50 =
  38. 38.15% of 270 =
  39. 39.126 + 17 =
  40. 40.795 ÷ 5 =

Answer key

  1. 640
  2. 257
  3. 4761
  4. 21.55
  5. 8281
  6. 525
  7. 615
  8. correct
  9. 1521
  10. 365
  11. 6.95
  12. 0.9
  13. 272
  14. 321
  15. 25
  16. 114
  17. 660
  18. 7921
  19. 210
  20. 3850
  21. wrong
  22. 675
  23. 345
  24. 81.2
  25. 660
  26. 165
  27. 8
  28. 145
  29. 104
  30. 210
  31. 144
  32. 29
  33. wrong
  34. 25
  35. 110
  36. 1521
  37. 2700
  38. 40.5
  39. 143
  40. 159

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