Table of contents

0. Review of Algebra4h 16m
1. Equations & Inequalities3h 18m
2. Graphs of Equations43m
3. Functions2h 17m
4. Polynomial Functions1h 44m
5. Rational Functions1h 23m
6. Exponential & Logarithmic Functions2h 28m
7. Systems of Equations & Matrices4h 6m
8. Conic Sections2h 23m
9. Sequences, Series, & Induction1h 19m
10. Combinatorics & Probability1h 45m

0. Review of Algebra

Exponents

College Algebra

0. Review of Algebra

Exponents

1:27 minutes

Problem 93a

Textbook Question

Add or subtract as indicated. 25.32 + 109.2 + 8.574

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Key Concepts

Here are the essential concepts you must grasp in order to answer the question correctly.

Decimal Addition

Decimal addition involves aligning numbers by their decimal points to ensure accurate addition. Each digit is added starting from the rightmost side, carrying over any value greater than ten to the next left column. This method is essential for maintaining precision in calculations involving decimal numbers.

Place Value

Place value refers to the value of a digit based on its position within a number. In decimal numbers, each position represents a power of ten, which is crucial for understanding how to add or subtract numbers correctly. Recognizing place value helps in organizing numbers and performing arithmetic operations accurately.

Rounding and Estimation

Rounding and estimation are techniques used to simplify calculations by approximating numbers to a certain degree of accuracy. While not directly required for the exact addition in this problem, understanding these concepts can help in quickly checking the reasonableness of the final answer, especially in real-world applications.