Ordering Rounding and Order of Operations
Selected Reading
- Order of Operations With Whole Numbers and Exponents: Basic
- Order of Operations With Whole Numbers and Grouping Symbols
- Order of Operations With Whole Numbers
- Introduction to Order of Operations
- Comparing Numerical Expressions With Parentheses
- Introduction to Parentheses
- Power of 10: Negative Exponent
- Power of 10: Positive Exponent
- Introduction to Exponents
- Writing Expressions Using Exponents
- Estimating a Quotient of Whole Numbers
- Estimating a Product of Whole Numbers
- Estimating a Difference of Whole Numbers
- Estimating a Sum of Whole Numbers
- Rounding to Thousands, Ten Thousand, or Hundred Thousand
- Rounding to Hundreds or Thousands
- Rounding to Tens or Hundreds
- Ordering Large Numbers
- Comparing a Numerical Expression With a Number
- Introduction to Inequalities
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Selected Reading
- Who is Who
- Computer Glossary
- HR Interview Questions
- Effective Resume Writing
- Questions and Answers
- UPSC IAS Exams Notes
Order of Operations With Whole Numbers
Order of Operations With Whole Numbers
Evaluate the following
9 – 8 ÷ 4 + 6 × 3
Solution
Step 1:
We follow the rule of order of operations PEMDAS.
There are no parentheses and exponents here.
Step 2:
So we first do all multippcation and spanision from left to right
9 – 8 ÷ 4 + 6 × 3 =
9 – 2 + 18
Step 3:
We then do all addition and subtraction from left to right
9 – 2 + 18 =
7 + 18 =
25
Step 4:
So 9 – 8 ÷ 4 + 6 × 3 = 25
Evaluate the following
18 ÷ 6 + 2 × 7 – 5
Solution
Step 1:
We follow the rule of order of operations PEMDAS.
There are no parentheses and exponents here.
Step 2:
So we first do all multippcation and spanision from left to right
18 ÷ 6 + 2 × 7 – 5 =
3 + 14 – 5
Step 3:
We then do all addition and subtraction from left to right
3 + 14 – 5 =
17 – 5 = 12
Step 4:
So 18 ÷ 6 + 2 × 7 – 5 = 12