ADDING, SUBTRACTING, MULTIPLYING AND DIVIDING NATURAL NUMBERS.
First, we perform any multiplying or divisions and then any adding or subtracting. If there were any operations inside parenthesis, we must solve them first:
Example: 14+(5 – 3) - 7 = 14+2-7 = 9
The common signs for multiplying may be: X, . , * : which means an "x", a dot between the numbers or an asterisk.
When you see operations inside parenthesis or brackets, you need to solve them first:
Solve these exercises: