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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 570 · 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.₹28.05 − ₹5.75 =
  2. 2.56 + 63 + 85 + 73 =
  3. 3.1 + 7 + 3 + 7 =
  4. 4.14 × 11 =
  5. 5.15% of 180 =
  6. 6.3 + 3 + 7 + 3 =
  7. 7.144 × 4 =
  8. 8.76 × 5 =
  9. 9.Check with nines: 311 + 262 = 573. Correct or wrong? (a) correct (b) wrong
  10. 10.62 + 70 + 20 + 28 =
  11. 11.₹67.10 − ₹12.85 =
  12. 12.14 × 16 =
  13. 13.85 − 28 =
  14. 14.44 × 15 =
  15. 15.51² =
  16. 16.84 + 25 + 70 + 25 =
  17. 17.9 × 15 =
  18. 18.Best estimate of 41 × 39? (a) 1600 (b) 3200 (c) 16000 (d) 160
  19. 19.253 − 29 =
  20. 20.19 × 5 =
  21. 21.₹78.05 − ₹30.45 =
  22. 22.341 − 26 =
  23. 23.110 + 79 =
  24. 24.1375 ÷ 25 =
  25. 25.301 + 37 =
  26. 26.350 ÷ 50 =
  27. 27.110 × 4 =
  28. 28.32 + 29 + 31 + 57 =
  29. 29.₹17.30 − ₹3.90 =
  30. 30.125 ÷ 25 =
  31. 31.41² =
  32. 32.775 ÷ 5 =
  33. 33.Check with nines: 67 × 88 = 5888. Correct or wrong? (a) wrong (b) correct
  34. 34.35 × 50 =
  35. 35.9 + 3 + 3 + 1 + 9 =
  36. 36.2 + 6 + 2 + 8 + 4 =
  37. 37.74 × 5 =
  38. 38.12 × 12 =
  39. 39.Best estimate of 18 × 72? (a) 2800 (b) 1400 (c) 140 (d) 14000
  40. 40.13 × 11 =

Answer key

  1. 22.3
  2. 277
  3. 18
  4. 154
  5. 27
  6. 16
  7. 576
  8. 380
  9. correct
  10. 180
  11. 54.25
  12. 224
  13. 57
  14. 660
  15. 2601
  16. 204
  17. 135
  18. 1600
  19. 224
  20. 95
  21. 47.6
  22. 315
  23. 189
  24. 55
  25. 338
  26. 7
  27. 440
  28. 149
  29. 13.4
  30. 5
  31. 1681
  32. 155
  33. wrong
  34. 1750
  35. 25
  36. 22
  37. 370
  38. 144
  39. 1400
  40. 143

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