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Squares 1 to 30 Mental Maths Worksheet

Mental maths lesson 18: Squares up to 30 · Set 758 · 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. 2.28² =
  3. 3.23² =
  4. 4.21² =
  5. 5.24² =
  6. 6.12² =
  7. 7.26² =
  8. 8.29² =
  9. 9.13² =
  10. 10.22² =
  11. 11.14² =
  12. 12.27² =
  13. 13.11² =
  14. 14.15² =
  15. 15.16² =
  16. 16.17² =
  17. 17.25² =
  18. 18.18² =
  19. 19.22² =
  20. 20.17² =
  21. 21.12² =
  22. 22.11² =
  23. 23.21² =
  24. 24.22² =
  25. 25.15² =
  26. 26.15² =
  27. 27.25² =
  28. 28.16² =
  29. 29.21² =
  30. 30.25² =
  31. 31.11² =
  32. 32.12² =
  33. 33.24² =
  34. 34.17² =
  35. 35.26² =
  36. 36.12² =
  37. 37.17² =
  38. 38.13² =
  39. 39.21² =
  40. 40.19² =

Answer key

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

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