QUESTION 17:
What is the value of the following expression?
24 / 2 - 8
| Expression | 16 - 12 / 4 | 2 + 6 / 2 | 8 + 4*2 | 8+4 * 2 | 12/2 - 3 | 6/8 + 2 |
|---|---|---|---|---|---|---|
| Value? | 13 | 5 | 16 | 16 | 3 | 2 |
The last result is correct.
First 6/8 is done using integer division, resulting in 0.
Then that 0 is added to 2.
When evaluating an expression, it can be helpful to do it one step at a time and to rewrite the expression after each step. Look at:
16 - 12 / 4
Do the division first, since it has highest precedence. Next, rewrite the expression replacing the division with its value:
16 - 3
Now evaluate the resulting expression:
13
You can write the process like this:
16 - 12 / 4
------
16 - 3
---------
13
The dashed lines show what was done at each step.
What is the value of the following expression?
24 / 2 - 8