The price of a laptop mouse is 49.9?
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The price of a laptop mouse is 49.9?
To solve this problem, we'll follow these steps:
Step 1: Identify the given information
Step 2: Apply the subtraction method to find the new price
Step 3: Verify the solution matches one of the multiple-choice options
Now, let's work through each step:
Step 1: The problem gives us an original price of \99.9 \) and a reduction of \49.9 \).
Step 2: We use subtraction to find the new price:
Aligning the decimal points and subtracting, we get:
in the hundredths place minus results in , and in the tenths place minus is , and finally, in the units position minus is .
The calculation gives us:
Step 3: Comparing with the choices, we find that the new price, \50 \), corresponds to choice : \50 \) .
Therefore, the solution to the problem is:
\ 50 \).
\( 50
Choose the correct writing form:
A discount means the price goes down, so you subtract! Think of it as taking money away from the original price. If the laptop mouse costs \99.9 \) and you save \49.9 \), you pay less money.
Always align the decimal points vertically! Write 99.9 above 49.9 with the decimal points in the same column. This prevents errors when subtracting each place value.
Ask yourself: Should the new price be lower than the original? Since \50 < \, our answer makes sense. Also verify: \50 + \$49.9 = \ ✓
The .0 shows we have zero cents! \50.0 \) is the same as \50 \) - both mean exactly 50 dollars with no additional cents.
\49 \) would mean subtracting \50.9 \) instead of \49.9 \). \50.9 \) would mean adding instead of subtracting. Only \50 \) correctly shows .
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