To determine why Julianne's answer might be incorrect, let's first analyze the calculation. To find the total cost of 0.92 of a pallet of flowers when each pallet costs $14.63, she should perform the multiplication:
\[ 0.92 \times 14.63 \]
Let's break down the possible response options:
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She did not line up the decimal points. - This would typically apply to addition or subtraction, not multiplication, so this is not likely the issue.
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The answer is correct. There are no errors. - This can only be true if she performed the calculation correctly. We need to check the actual multiplication.
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She did not use 0 as a placeholder when multiplying by 9 tenths. - This response pertains to the operation of multiplication but may not be relevant unless she misunderstood the multiplication process itself.
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The decimal in the answer is in the incorrect place. - This could indicate a common error while performing multiplication when dealing with decimals.
To find the correct answer to \( 0.92 \times 14.63 \):
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Multiply as if there are no decimals: \[ 92 \times 1463 = 134906 \]
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Count the total number of decimal places in the two numbers being multiplied:
- \( 0.92 \) has 2 decimal places.
- \( 14.63 \) has 2 decimal places.
- Total: 2 + 2 = 4 decimal places.
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Place the decimal in the result calculated: \[ 134906 \to 13.4906 \]
Thus, the final answer should be \( 13.49 \) when rounded to two decimal places.
If Julianne's final answer does not reflect this decimal placement, then the incorrect placement of the decimal is a valid reason for the error.
Based on this analysis, the correct answer as to why her answer might be incorrect is:
The decimal in the answer is in the incorrect place.
3 answers