Solve: 81÷9÷3+18+27-10 Using Order of Operations

Question

81:9:3+18+2710=? 81:9:3+18+27-10=\text{?}

Video Solution

Solution Steps

00:00 Solve
00:03 Always solve multiplication and division before addition and subtraction
00:07 Let's solve the division separately and then continue solving
00:23 Let's solve each operation separately and then sum up
00:28 And this is the solution to the question

Step-by-Step Solution

According to the order of operations rules, we'll put the division exercises in parentheses:

(81:9:3)+18+2710= (81:9:3)+18+27-10=

Let's solve the expression in parentheses from left to right:

81:9=9 81:9=9

9:3=3 9:3=3

Now we'll get the expression:

3+18+2710= 3+18+27-10=

Let's solve the expression from left to right:

3+18=21 3+18=21

21+27=48 21+27=48

4810=38 48-10=38

Answer

38