Dr. J's Maths.com
Where the techniques of Maths
are explained in simple terms.

Algebra - Equations - Changing the subject.
Test Yourself 1.


 

In the questions below, the focus is on:
1. Basic formats.
2. Common factors.
3. Fractions.
4. Squares and square roots.
5. (a bit) harder examples.

 

Basic format

1.

2.
  3. . 4.
  5. 6. .
  7. 8.
  9.

10.

  11. 12.
  13. 14.
  15. 16.
Common factors 17. 18.
  19. 20.
Fractions 21. 22.
  23.

24. (i)

(ii)

  25. 26.
  27. 28.

Squares and square roots.

For each of the following questions 29 - 42, state what restrictions must be assumed if the equation is rearranged to the subject indicated.
  29.

30.
  31. 32.
  33. 34.
  35. 36.
  37. 38.
  39. 40. Length = 61.25 cm.
  41. (i)

(ii)

42.
Harder fractions. 43. 44.