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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 955 · 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. 1.71 × 8 =
  2. 2.20% of 170 =
  3. 3.11 × 11 =
  4. 4.84 + 29 =
  5. 5.Best estimate of 798 × 4? (a) 320 (b) 3200 (c) 6400 (d) 32000
  6. 6.18 × 19 =
  7. 7.Best estimate of 38 × 41? (a) 1600 (b) 160 (c) 16000 (d) 3200
  8. 8.9 + 9 + 1 + 8 + 5 =
  9. 9.12 × 11 =
  10. 10.16 × 18 =
  11. 11.211 − 16 =
  12. 12.20% of 620 =
  13. 13.Check with nines: 71 × 19 = 1353. Correct or wrong? (a) correct (b) wrong
  14. 14.₹46.40 − ₹12.20 =
  15. 15.₹81.90 − ₹30.65 =
  16. 16.13 × 15 =
  17. 17.8 + 9 + 2 + 1 =
  18. 18.161 + 49 =
  19. 19.Check with nines: 63 × 17 = 1078. Correct or wrong? (a) wrong (b) correct
  20. 20.Best estimate of 601 × 5? (a) 6000 (b) 300 (c) 3000 (d) 30000
  21. 21.34 + 83 + 31 + 61 =
  22. 22.1 + 5 + 5 + 4 =
  23. 23.11 × 12 =
  24. 24.₹30.55 + ₹46.45 =
  25. 25.53 × 50 =
  26. 26.41 × 8 =
  27. 27.417 − 56 =
  28. 28.162 + 37 =
  29. 29.5% of 90 =
  30. 30.76 × 4 =
  31. 31.9 × 15 =
  32. 32.₹31.85 − ₹5.65 =
  33. 33.423 + 87 =
  34. 34.89² =
  35. 35.5 + 4 + 7 + 6 =
  36. 36.7 + 4 + 1 + 9 + 6 =
  37. 37.234 − 37 =
  38. 38.361 + 77 =
  39. 39.405 − 86 =
  40. 40.60 + 22 + 88 + 79 =

Answer key

  1. 568
  2. 34
  3. 121
  4. 113
  5. 3200
  6. 342
  7. 1600
  8. 32
  9. 132
  10. 288
  11. 195
  12. 124
  13. wrong
  14. 34.2
  15. 51.25
  16. 195
  17. 20
  18. 210
  19. wrong
  20. 3000
  21. 209
  22. 15
  23. 132
  24. 77
  25. 2650
  26. 328
  27. 361
  28. 199
  29. 4.5
  30. 304
  31. 135
  32. 26.2
  33. 510
  34. 7921
  35. 22
  36. 27
  37. 197
  38. 438
  39. 319
  40. 249

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