In this worksheet, you must use the brackets buttons on your calculator.
Remember
The top and the bottom must go in brackets, so that:
|
= |
|
= 1 |
The order of operations is
1. brackets
2. powers or indices
3. multiplication and division
4. adding and substraction
3 × 42 = 3 × 16 = 48
and (3 × 4)2 = 122 = 144
−52 = −25 = (−(5 × 5))
(−5)2 = +25 = (−5) × (−5)