What is 185.64 minus 54.9?

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Multiple Choice

What is 185.64 minus 54.9?

Explanation:
The main idea is to subtract decimals by lining up the decimal points and handling borrowing if needed. Start by making both numbers have the same number of decimal places: 185.64 and 54.90. Subtract from right to left: - Hundredths: 4 − 0 = 4 - Tenths: 6 − 9 cannot, so borrow 1 from the ones place. The ones digit 5 becomes 4, and the tenths become 16. Then 16 − 9 = 7 - Ones: now 4 − 4 = 0 - Tens: 8 − 5 = 3 - Hundreds: 1 − 0 = 1 Reading the digits from hundreds to hundredths gives 130.74. A quick check: 185.64 − 54.90 = (185.64 − 54.00) − 0.90 = 131.64 − 0.90 = 130.74. So the result is 130.74.

The main idea is to subtract decimals by lining up the decimal points and handling borrowing if needed. Start by making both numbers have the same number of decimal places: 185.64 and 54.90.

Subtract from right to left:

  • Hundredths: 4 − 0 = 4

  • Tenths: 6 − 9 cannot, so borrow 1 from the ones place. The ones digit 5 becomes 4, and the tenths become 16. Then 16 − 9 = 7

  • Ones: now 4 − 4 = 0

  • Tens: 8 − 5 = 3

  • Hundreds: 1 − 0 = 1

Reading the digits from hundreds to hundredths gives 130.74. A quick check: 185.64 − 54.90 = (185.64 − 54.00) − 0.90 = 131.64 − 0.90 = 130.74.

So the result is 130.74.

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