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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 975 · 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. 1.12 × 15 =
  2. 2.83 × 4 =
  3. 3.16 × 19 =
  4. 4.Check with nines: 191 + 803 = 994. Correct or wrong? (a) correct (b) wrong
  5. 5.71² =
  6. 6.200 ÷ 25 =
  7. 7.20 × 15 =
  8. 8.25% of 740 =
  9. 9.9 + 4 + 6 + 6 =
  10. 10.48 × 15 =
  11. 11.109 × 4 =
  12. 12.₹68.90 + ₹43.20 =
  13. 13.33 × 8 =
  14. 14.426 − 59 =
  15. 15.Check with nines: 67 × 42 = 2814. Correct or wrong? (a) correct (b) wrong
  16. 16.7 + 3 + 3 + 1 =
  17. 17.51 + 29 + 54 + 67 =
  18. 18.155 × 4 =
  19. 19.33 × 50 =
  20. 20.₹32.15 + ₹25.20 =
  21. 21.25 × 4 =
  22. 22.Best estimate of 62 × 21? (a) 1200 (b) 2400 (c) 12000 (d) 120
  23. 23.50 × 15 =
  24. 24.50 × 15 =
  25. 25.24 + 26 + 16 + 18 =
  26. 26.599 − 87 =
  27. 27.₹94.60 + ₹29.10 =
  28. 28.38 × 15 =
  29. 29.62 × 15 =
  30. 30.550 ÷ 50 =
  31. 31.41² =
  32. 32.20 × 50 =
  33. 33.1% of 340 =
  34. 34.16 × 12 =
  35. 35.₹63.05 − ₹32.20 =
  36. 36.50% of 500 =
  37. 37.Check with nines: 956 + 422 = 1374. Correct or wrong? (a) wrong (b) correct
  38. 38.467 + 18 =
  39. 39.51 × 5 =
  40. 40.₹23.90 + ₹23.15 =

Answer key

  1. 180
  2. 332
  3. 304
  4. correct
  5. 5041
  6. 8
  7. 300
  8. 185
  9. 25
  10. 720
  11. 436
  12. 112.1
  13. 264
  14. 367
  15. correct
  16. 14
  17. 201
  18. 620
  19. 1650
  20. 57.35
  21. 100
  22. 1200
  23. 750
  24. 750
  25. 84
  26. 512
  27. 123.7
  28. 570
  29. 930
  30. 11
  31. 1681
  32. 1000
  33. 3.4
  34. 192
  35. 30.85
  36. 250
  37. wrong
  38. 485
  39. 255
  40. 47.05

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