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Chapter 2: Problem 27

\(142 \mathrm{~cm}-0.48 \mathrm{~cm}=?\)

Short Answer

Expert verified
141.52 cm

Step by step solution

01

Convert the whole number to a decimal number

Since we're subtracting a decimal number, it's easier to work with both numbers in the same format. So let's convert 142 cm to a decimal number by adding a decimal point and two decimal places (zeros in this case) to represent hundredths: 142.00 cm.
02

Align the numbers vertically

Align the two numbers vertically with the decimal points lined up: ``` 142.00 - 0.48 ```
03

Subtract the decimal number from the whole number

Now, we can subtract 0.48 from 142.00. 1. Start with the hundredths place: \(0 - 8\), since we cannot subtract 8 from 0, we need to borrow 1 from the tenths place. 2. The tenths place becomes \(10 - 1 = 9\) and the hundredths place becomes \(10 + 0 = 10\). 3. Now subtract the hundredths place: \(10 - 8 = 2\). Write the result in the hundredths place. 4. Move to the tenths place: \(9 - 4 = 5\). Write the result in the tenths place. 5. Finally, subtract the whole numbers: \(142 - 0 = 142\). The result should look like this: ``` 142.00 - 0.48 ------- 141.52 ```
04

Write the answer

The result of subtracting 0.48 cm from 142 cm is 141.52 cm.

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