Estimate the Sum by Rounding to the Nearest Whole Number

question 139

Multiple Choice

Estimate the sum by rounding to the nearest whole number: 2.78 + 8.48

• A)10
• B)12
• C)11
• D)9

Explain the concept and advantages of the formula sales presentation method.

Determine the appropriate sales presentation method for given sales situations.

Understand the role of customer participation and interaction in sales presentations.

Describe the sequence and effectiveness of problem-solution presentations.

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Definitions:

Combine

The process of uniting two or more expressions into a single expression using mathematical operations.

Simplify

The process of making an expression easier to understand or work with by combining like terms, reducing fractions, etc.

Rational Model

A mathematical model that uses rational expressions to describe relationships between different quantities.

Least Common Denominator

The smallest positive integer that is divisible by each denominator of a set of fractions, facilitating their comparison or summation.