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Squares 1 to 30 Mental Maths Worksheet

Mental maths lesson 18: Squares up to 30 · Set 875 · 40 questions
TalentJR

How to do it in your head ((a + b)²): Split: 27 = 20 + 7. Find 20² = 400, 2 × 20 × 7 = 280 and 7² = 49. Add, biggest first: 400 + 280 + 49.

NameDateTime takenScore ___ / 40
  1. 1.16² =
  2. 2.13² =
  3. 3.14² =
  4. 4.27² =
  5. 5.22² =
  6. 6.23² =
  7. 7.21² =
  8. 8.25² =
  9. 9.24² =
  10. 10.17² =
  11. 11.29² =
  12. 12.18² =
  13. 13.19² =
  14. 14.28² =
  15. 15.15² =
  16. 16.26² =
  17. 17.11² =
  18. 18.17² =
  19. 19.12² =
  20. 20.11² =
  21. 21.13² =
  22. 22.19² =
  23. 23.25² =
  24. 24.22² =
  25. 25.27² =
  26. 26.13² =
  27. 27.18² =
  28. 28.27² =
  29. 29.22² =
  30. 30.26² =
  31. 31.21² =
  32. 32.17² =
  33. 33.21² =
  34. 34.12² =
  35. 35.15² =
  36. 36.26² =
  37. 37.12² =
  38. 38.14² =
  39. 39.18² =
  40. 40.16² =

Answer key

  1. 256
  2. 169
  3. 196
  4. 729
  5. 484
  6. 529
  7. 441
  8. 625
  9. 576
  10. 289
  11. 841
  12. 324
  13. 361
  14. 784
  15. 225
  16. 676
  17. 121
  18. 289
  19. 144
  20. 121
  21. 169
  22. 361
  23. 625
  24. 484
  25. 729
  26. 169
  27. 324
  28. 729
  29. 484
  30. 676
  31. 441
  32. 289
  33. 441
  34. 144
  35. 225
  36. 676
  37. 144
  38. 196
  39. 324
  40. 256

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