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
Introduction to Exponents
Introduction to Exponents
am = a × a × a × a…m times.
The exponent of a number says how many times the number should be used in a multippcation. In above notation, m is the exponent and the number (the base) is a which is multipped m times
To evaluate an exponent,
we write it in expanded form and multiply,
Example:
Evaluate 34
Solution
34 = 3 × 3 × 3 × 3 = 81.
Evaluate 26
Solution
Step 1:
26 means there are six 2s in the multippcation.
Step 2:
So 26 = 2 × 2 × 2 × 2 × 2 × 2 = 64
Evaluate 54
Solution
Step 1:
54 means there are four 5s in the multippcation.
Step 2:
So 54 = 5 × 5 × 5 × 5 = 625
Evaluate 73
Solution
Step 1:
73 means there are three 7s in the multippcation
Step 2:
So 73 = 7 × 7 × 7 = 343