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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 569 · 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. 1.2 + 4 + 1 + 6 + 8 =
  2. 2.12 × 14 =
  3. 3.18 × 17 =
  4. 4.20% of 730 =
  5. 5.171 − 27 =
  6. 6.253 + 19 =
  7. 7.Check with nines: 160 + 783 = 943. Correct or wrong? (a) wrong (b) correct
  8. 8.24 × 15 =
  9. 9.900 ÷ 25 =
  10. 10.37 × 15 =
  11. 11.11 × 18 =
  12. 12.459 + 39 =
  13. 13.72 + 23 + 59 + 52 =
  14. 14.1100 ÷ 25 =
  15. 15.14 × 15 =
  16. 16.₹59.45 − ₹5.25 =
  17. 17.₹54.35 − ₹19.20 =
  18. 18.Check with nines: 79 × 79 = 6249. Correct or wrong? (a) wrong (b) correct
  19. 19.Check with nines: 52 × 39 = 2028. Correct or wrong? (a) correct (b) wrong
  20. 20.19 × 15 =
  21. 21.340 ÷ 5 =
  22. 22.₹93.40 − ₹19.30 =
  23. 23.330 − 59 =
  24. 24.Check with nines: 25 × 18 = 450. Correct or wrong? (a) wrong (b) correct
  25. 25.19² =
  26. 26.Check with nines: 678 + 639 = 1317. Correct or wrong? (a) wrong (b) correct
  27. 27.7 + 8 + 9 + 3 =
  28. 28.337 + 97 =
  29. 29.8 × 15 =
  30. 30.14 × 12 =
  31. 31.2 + 6 + 8 + 1 + 8 =
  32. 32.Best estimate of 19 × 51? (a) 10000 (b) 1000 (c) 2000 (d) 100
  33. 33.890 ÷ 5 =
  34. 34.370 − 68 =
  35. 35.₹22.05 − ₹11.15 =
  36. 36.59 × 5 =
  37. 37.Check with nines: 78 × 79 = 6168. Correct or wrong? (a) wrong (b) correct
  38. 38.58 × 15 =
  39. 39.15% of 360 =
  40. 40.59² =

Answer key

  1. 21
  2. 168
  3. 306
  4. 146
  5. 144
  6. 272
  7. correct
  8. 360
  9. 36
  10. 555
  11. 198
  12. 498
  13. 206
  14. 44
  15. 210
  16. 54.2
  17. 35.15
  18. wrong
  19. correct
  20. 285
  21. 68
  22. 74.1
  23. 271
  24. correct
  25. 361
  26. correct
  27. 27
  28. 434
  29. 120
  30. 168
  31. 25
  32. 1000
  33. 178
  34. 302
  35. 10.9
  36. 295
  37. wrong
  38. 870
  39. 54
  40. 3481

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