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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 411 · 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. 1.565 − 57 =
  2. 2.Best estimate of 101 × 6? (a) 60 (b) 6000 (c) 1200 (d) 600
  3. 3.Best estimate of 897 × 4? (a) 360 (b) 3600 (c) 7200 (d) 36000
  4. 4.Best estimate of 42 × 92? (a) 7200 (b) 36000 (c) 360 (d) 3600
  5. 5.11 × 13 =
  6. 6.900 ÷ 25 =
  7. 7.62 + 77 =
  8. 8.47 × 15 =
  9. 9.Best estimate of 201 × 9? (a) 1800 (b) 180 (c) 3600 (d) 18000
  10. 10.44 × 8 =
  11. 11.263 + 38 =
  12. 12.₹37.65 − ₹36.25 =
  13. 13.59² =
  14. 14.11 + 25 + 76 + 58 =
  15. 15.128 + 69 =
  16. 16.15% of 130 =
  17. 17.52 × 8 =
  18. 18.154 × 4 =
  19. 19.101 + 88 =
  20. 20.Check with nines: 763 + 980 = 1743. Correct or wrong? (a) correct (b) wrong
  21. 21.16 × 14 =
  22. 22.12 × 11 =
  23. 23.28 × 5 =
  24. 24.₹98.85 + ₹41.50 =
  25. 25.1 + 7 + 7 + 9 =
  26. 26.₹51.25 + ₹5.50 =
  27. 27.31 + 33 + 43 + 76 =
  28. 28.15% of 900 =
  29. 29.240 ÷ 5 =
  30. 30.237 + 17 =
  31. 31.1550 ÷ 50 =
  32. 32.217 + 97 =
  33. 33.149 × 4 =
  34. 34.81² =
  35. 35.43 × 15 =
  36. 36.875 ÷ 5 =
  37. 37.₹57.65 + ₹16.90 =
  38. 38.92 − 39 =
  39. 39.58 + 33 + 29 + 64 =
  40. 40.34 + 40 + 32 + 12 =

Answer key

  1. 508
  2. 600
  3. 3600
  4. 3600
  5. 143
  6. 36
  7. 139
  8. 705
  9. 1800
  10. 352
  11. 301
  12. 1.4
  13. 3481
  14. 170
  15. 197
  16. 19.5
  17. 416
  18. 616
  19. 189
  20. correct
  21. 224
  22. 132
  23. 140
  24. 140.35
  25. 24
  26. 56.75
  27. 183
  28. 135
  29. 48
  30. 254
  31. 31
  32. 314
  33. 596
  34. 6561
  35. 645
  36. 175
  37. 74.55
  38. 53
  39. 184
  40. 118

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