You follow the Order of Operations: P - parenthesis E - exponents M - multiplication D - division A - addition S - subtraction
Take #3 for example:
10-18÷3+1
No parenthesis, no exponents, no multiplication, but there's division! -18÷3, which equals -6. So, now the newly written equation is: 10-6+1 Next, there's addition. -6+1, which equals -5. Newly written equation: 10-5 Finally, there's subtraction. 10-5=5 So, the answer is 5.
