Solve the Expression: 3+4÷2×1-9+4 Using Order of Operations

Question

$3+4:2\times1-9+4=$

00:00 Multiplication and division come before addition and subtraction, so we'll start with them

00:12 Multiplication and division are at the same level, so we solve from left to right

00:15 Let's solve the marked part

00:22 Let's continue with the next multiplication

00:25 Any number multiplied by 1 remains the same number

00:32 Addition and subtraction are at the same level, so we solve from left to right

00:49 And that's the solution!

According to the order of operations rules, we first insert the multiplication and division exercises into parentheses:

$3+(4:2\times1)-9+4=$

We'll solve the exercise from left to right:

$4:2=2$

$2\times1=2$

And we'll get the exercise:

$3+2-9+4=$

Since the exercise only contains subtraction operations, we'll solve it from left to right:

$3+2=5$

$5-9=-4$

$-4+4=0$