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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 756 · 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. 1.19 × 19 =
  2. 2.310 ÷ 5 =
  3. 3.82 + 26 + 45 + 82 =
  4. 4.60 × 5 =
  5. 5.27 × 50 =
  6. 6.12 × 12 =
  7. 7.52 × 8 =
  8. 8.50% of 740 =
  9. 9.50 × 5 =
  10. 10.1% of 240 =
  11. 11.5 + 5 + 7 + 2 + 9 =
  12. 12.Best estimate of 197 × 7? (a) 1400 (b) 140 (c) 2800 (d) 14000
  13. 13.11 × 15 =
  14. 14.126 − 47 =
  15. 15.Best estimate of 802 × 4? (a) 6400 (b) 320 (c) 3200 (d) 32000
  16. 16.610 ÷ 5 =
  17. 17.80 × 5 =
  18. 18.₹67.55 + ₹25.40 =
  19. 19.12 × 18 =
  20. 20.141 + 99 =
  21. 21.67 × 8 =
  22. 22.1% of 780 =
  23. 23.467 + 57 =
  24. 24.322 + 89 =
  25. 25.65 × 5 =
  26. 26.65 × 8 =
  27. 27.1325 ÷ 25 =
  28. 28.12 × 15 =
  29. 29.Best estimate of 42 × 48? (a) 4000 (b) 200 (c) 2000 (d) 20000
  30. 30.229 − 28 =
  31. 31.191 − 67 =
  32. 32.20% of 330 =
  33. 33.700 ÷ 25 =
  34. 34.63 + 66 + 20 + 11 =
  35. 35.51² =
  36. 36.Check with nines: 91 × 63 = 5733. Correct or wrong? (a) wrong (b) correct
  37. 37.Best estimate of 69 × 22? (a) 140 (b) 2800 (c) 1400 (d) 14000
  38. 38.48 × 50 =
  39. 39.71² =
  40. 40.69² =

Answer key

  1. 361
  2. 62
  3. 235
  4. 300
  5. 1350
  6. 144
  7. 416
  8. 370
  9. 250
  10. 2.4
  11. 28
  12. 1400
  13. 165
  14. 79
  15. 3200
  16. 122
  17. 400
  18. 92.95
  19. 216
  20. 240
  21. 536
  22. 7.8
  23. 524
  24. 411
  25. 325
  26. 520
  27. 53
  28. 180
  29. 2000
  30. 201
  31. 124
  32. 66
  33. 28
  34. 160
  35. 2601
  36. correct
  37. 1400
  38. 2400
  39. 5041
  40. 4761

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