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Squares 1 to 30 Mental Maths Worksheet

Mental maths lesson 18: Squares up to 30 · Set 760 · 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. 1.19² =
  2. 2.23² =
  3. 3.26² =
  4. 4.14² =
  5. 5.17² =
  6. 6.15² =
  7. 7.18² =
  8. 8.25² =
  9. 9.16² =
  10. 10.21² =
  11. 11.27² =
  12. 12.11² =
  13. 13.24² =
  14. 14.12² =
  15. 15.28² =
  16. 16.29² =
  17. 17.26² =
  18. 18.13² =
  19. 19.22² =
  20. 20.29² =
  21. 21.12² =
  22. 22.21² =
  23. 23.25² =
  24. 24.17² =
  25. 25.13² =
  26. 26.16² =
  27. 27.15² =
  28. 28.26² =
  29. 29.21² =
  30. 30.27² =
  31. 31.26² =
  32. 32.27² =
  33. 33.12² =
  34. 34.25² =
  35. 35.13² =
  36. 36.16² =
  37. 37.13² =
  38. 38.17² =
  39. 39.24² =
  40. 40.14² =

Answer key

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

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