Math Problem Statement
This question has two parts. First, answer Part A. Then, answer Part B. Part A Select the correct choices to complete the sentence. Erica wants to find the product of 2.145×0.72 .
First, estimate the product of 2.145×0.72 .
2.145 can be rounded 1 of 5. Select Choice to 2 of 5. Select Choice .
0.72 can be rounded 3 of 5. Select Choice to 4 of 5. Select Choice .
A reasonable estimate is 5 of 5. Select Choice .
Part B Find 2.145×0.72 . Compare your estimate with your answer. What can you conclude?
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Solution
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Math Problem Analysis
Mathematical Concepts
Estimation
Rounding
Multiplication of Decimals
Formulas
Rounded product estimation: Round each number, then multiply
Theorems
N/A
Suitable Grade Level
Grade 5-7