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Tables & multiplication lesson 22: Mixed challenge · Set 508 · 40 questions
TalentJR

How it works (Choose a strategy): A number ending in 5 and an even number → double and halve. A number ending in 9 or 8 → round and adjust. Two numbers the same distance from a round number → middle square. Otherwise → split into tens and ones.

NameDateTime takenScore ___ / 40
  1. 1.65 × 75 =
  2. 2.3 × 12 =
  3. 3.5 × 12 =
  4. 4.20 × 25 =
  5. 5.33 × 5 =
  6. 6.26 × 5 =
  7. 7.47 × 4 =
  8. 8.4 × 9 =
  9. 9.75 × 10 =
  10. 10.60 × 50 =
  11. 11.67 × 7 =
  12. 12.5 × 49 =
  13. 13.Is 30 × 0.75 bigger or smaller than 30? (a) bigger (b) smaller
  14. 14.125 × 24 =
  15. 15.36 × 98 =
  16. 16.72 × 25 =
  17. 17.Is 74 × 0.2 bigger or smaller than 74? (a) bigger (b) smaller
  18. 18.5 × 29 =
  19. 19.5 × 57 =
  20. 20.9 × 57 =
  21. 21.Is 42 × 0.9 bigger or smaller than 42? (a) bigger (b) smaller
  22. 22.76 × 3 =
  23. 23.29 × 99 =
  24. 24.16 × 99 =
  25. 25.38 × 42 =
  26. 26.6 × 14 =
  27. 27.125 × 28 =
  28. 28.75 × 30 =
  29. 29.57 × 63 =
  30. 30.89 × 91 =
  31. 31.A rangoli has 6 rows of 4 dots. How many dots are there in all?
  32. 32.86 × 3 =
  33. 33.14 × 16 =
  34. 34.125 × 6 =
  35. 35.64 × 5 =
  36. 36.55 × 9 =
  37. 37.A rangoli has 4 rows of 8 dots. How many dots are there in all?
  38. 38.Is 29 × 0.9 bigger or smaller than 29? (a) bigger (b) smaller
  39. 39.3 × 12 =
  40. 40.A rangoli has 7 rows of 7 dots. How many dots are there in all?

Answer key

  1. 4875
  2. 36
  3. 60
  4. 500
  5. 165
  6. 130
  7. 188
  8. 36
  9. 750
  10. 3000
  11. 469
  12. 245
  13. smaller
  14. 3000
  15. 3528
  16. 1800
  17. smaller
  18. 145
  19. 285
  20. 513
  21. smaller
  22. 228
  23. 2871
  24. 1584
  25. 1596
  26. 84
  27. 3500
  28. 2250
  29. 3591
  30. 8099
  31. 24
  32. 258
  33. 224
  34. 750
  35. 320
  36. 495
  37. 32
  38. smaller
  39. 36
  40. 49

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