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Squares 1 to 30 Mental Maths Worksheet

Mental maths lesson 18: Squares up to 30 · Set 361 · 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. 1.11² =
  2. 2.26² =
  3. 3.23² =
  4. 4.18² =
  5. 5.13² =
  6. 6.15² =
  7. 7.19² =
  8. 8.27² =
  9. 9.21² =
  10. 10.12² =
  11. 11.17² =
  12. 12.24² =
  13. 13.25² =
  14. 14.14² =
  15. 15.16² =
  16. 16.23² =
  17. 17.29² =
  18. 18.27² =
  19. 19.15² =
  20. 20.22² =
  21. 21.29² =
  22. 22.18² =
  23. 23.28² =
  24. 24.14² =
  25. 25.13² =
  26. 26.26² =
  27. 27.23² =
  28. 28.21² =
  29. 29.11² =
  30. 30.29² =
  31. 31.25² =
  32. 32.29² =
  33. 33.13² =
  34. 34.23² =
  35. 35.15² =
  36. 36.13² =
  37. 37.21² =
  38. 38.11² =
  39. 39.12² =
  40. 40.15² =

Answer key

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

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