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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 931 · 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. 1.49 × 4 =
  2. 2.Check with nines: 53 × 12 = 631. Correct or wrong? (a) wrong (b) correct
  3. 3.350 + 57 =
  4. 4.496 − 76 =
  5. 5.50% of 690 =
  6. 6.39² =
  7. 7.Best estimate of 42 × 49? (a) 200 (b) 20000 (c) 2000 (d) 4000
  8. 8.6 × 15 =
  9. 9.Check with nines: 891 + 673 = 1557. Correct or wrong? (a) correct (b) wrong
  10. 10.4 + 2 + 1 + 2 + 8 =
  11. 11.₹18.60 + ₹17.25 =
  12. 12.Check with nines: 16 × 14 = 228. Correct or wrong? (a) correct (b) wrong
  13. 13.41 × 4 =
  14. 14.275 ÷ 25 =
  15. 15.363 − 56 =
  16. 16.12 × 11 =
  17. 17.12 × 8 =
  18. 18.970 ÷ 5 =
  19. 19.1250 ÷ 50 =
  20. 20.10% of 890 =
  21. 21.59² =
  22. 22.15 × 18 =
  23. 23.Best estimate of 603 × 5? (a) 6000 (b) 300 (c) 3000 (d) 30000
  24. 24.156 + 39 =
  25. 25.715 ÷ 5 =
  26. 26.13 × 18 =
  27. 27.59 + 98 =
  28. 28.94 + 98 =
  29. 29.14 × 12 =
  30. 30.300 ÷ 5 =
  31. 31.30 + 52 + 75 + 88 =
  32. 32.309 − 26 =
  33. 33.61 × 8 =
  34. 34.77 − 18 =
  35. 35.200 ÷ 50 =
  36. 36.24 × 5 =
  37. 37.276 − 27 =
  38. 38.11 × 18 =
  39. 39.122 × 4 =
  40. 40.20% of 280 =

Answer key

  1. 196
  2. wrong
  3. 407
  4. 420
  5. 345
  6. 1521
  7. 2000
  8. 90
  9. wrong
  10. 17
  11. 35.85
  12. wrong
  13. 164
  14. 11
  15. 307
  16. 132
  17. 96
  18. 194
  19. 25
  20. 89
  21. 3481
  22. 270
  23. 3000
  24. 195
  25. 143
  26. 234
  27. 157
  28. 192
  29. 168
  30. 60
  31. 245
  32. 283
  33. 488
  34. 59
  35. 4
  36. 120
  37. 249
  38. 198
  39. 488
  40. 56

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