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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 780 · 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. 1.85 × 5 =
  2. 2.75 ÷ 25 =
  3. 3.10% of 380 =
  4. 4.Check with nines: 38 × 68 = 2577. Correct or wrong? (a) correct (b) wrong
  5. 5.350 + 67 =
  6. 6.₹55.65 − ₹20.80 =
  7. 7.₹66.75 − ₹25.85 =
  8. 8.3 + 8 + 8 + 2 + 8 =
  9. 9.269 + 49 =
  10. 10.745 ÷ 5 =
  11. 11.18 × 4 =
  12. 12.47 × 50 =
  13. 13.₹62.85 − ₹38.30 =
  14. 14.5 + 8 + 2 + 7 + 2 =
  15. 15.Best estimate of 18 × 61? (a) 120 (b) 1200 (c) 12000 (d) 2400
  16. 16.19 × 13 =
  17. 17.18 + 48 + 54 + 56 =
  18. 18.16 × 14 =
  19. 19.10% of 610 =
  20. 20.₹62.60 − ₹14.55 =
  21. 21.232 − 57 =
  22. 22.49 × 5 =
  23. 23.Best estimate of 38 × 18? (a) 1600 (b) 8000 (c) 80 (d) 800
  24. 24.25% of 80 =
  25. 25.Best estimate of 48 × 41? (a) 200 (b) 20000 (c) 4000 (d) 2000
  26. 26.1 + 9 + 5 + 8 + 5 =
  27. 27.5% of 160 =
  28. 28.4 + 1 + 9 + 8 =
  29. 29.7 + 5 + 3 + 5 =
  30. 30.₹73.70 + ₹9.10 =
  31. 31.385 − 46 =
  32. 32.83 + 18 + 63 + 23 =
  33. 33.40 × 4 =
  34. 34.88 × 5 =
  35. 35.505 − 57 =
  36. 36.312 + 59 =
  37. 37.74 × 4 =
  38. 38.55 × 5 =
  39. 39.304 + 78 =
  40. 40.62 × 5 =

Answer key

  1. 425
  2. 3
  3. 38
  4. wrong
  5. 417
  6. 34.85
  7. 40.9
  8. 29
  9. 318
  10. 149
  11. 72
  12. 2350
  13. 24.55
  14. 24
  15. 1200
  16. 247
  17. 176
  18. 224
  19. 61
  20. 48.05
  21. 175
  22. 245
  23. 800
  24. 20
  25. 2000
  26. 28
  27. 8
  28. 22
  29. 20
  30. 82.8
  31. 339
  32. 187
  33. 160
  34. 440
  35. 448
  36. 371
  37. 296
  38. 275
  39. 382
  40. 310

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