Learn
Computers are incredible at doing calculations. Now that we have declared variables, let’s use them with arithmetic operators to calculate things!
Here are some arithmetic operators:
+
addition-
subtraction*
multiplication/
division%
modulo (divides and gives the remainder)
For example:
var score = 0 // score is 0 score = 4 + 2 // it is now 6 score = score - 2 // it is now 4 score = 4 * 2 // it is now 8 score = 4 / 2 // and now 2 score = 5 % 2 // and now 1
Note: The order of operations can be specified using parentheses. For example, the use of parentheses in score = 4 * (2 + 1)
sets score equal to 4 * 3
rather than 8 + 1
.
Instructions
1.
In the code editor, we have already declared and initialized a variable called amount
.
Declare a new variable named tip
and give it the value of amount
multiplied by 0.2
.
2.
Now print out tip
.
How much is the tip?
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