(100-7•2+3)÷10
8.9
Remember pemdas
(100-7*2+3)÷10
7*2=14
100-10=86
86+5=91
91/10
9.1
pemdas--add to subtract left to right unless subtract is in front of the addition
(100-7•2+3)÷10
= (100 - 14 + 3)÷10
= 89/10
= 8.9
To evaluate the expression (100-7•2+3)÷10, we need to follow the order of operations, also known as PEMDAS.
PEMDAS stands for:
1. Parentheses: Perform operations inside parentheses first.
2. Exponents: Evaluate any exponents next.
3. Multiplication and Division: Perform multiplication and division from left to right.
4. Addition and Subtraction: Finally, perform addition and subtraction from left to right.
Let's break down the expression step by step:
Step 1: Perform the multiplication inside the parentheses.
7•2 = 14
The expression becomes: (100-14+3)÷10
Step 2: Perform the subtraction inside the parentheses.
100 - 14 = 86
The expression becomes: (86+3)÷10
Step 3: Perform the addition.
86 + 3 = 89
The expression becomes: 89÷10
Step 4: Perform the division.
89 ÷ 10 = 8.9
Therefore, the value of the expression (100-7•2+3)÷10 is 8.9.