To convert a decimal to a percent, which operation is used?

To convert a decimal to a percent, which operation is used?

• A. Move the decimal point two places to the right
• B. Move left two places
• C. Multiply by 10
• D. Divide by 100

Answer: (A)

To convert a decimal to a percent, you express the same number as a portion of 100. Multiply by 100, which is the same as moving the decimal point two places to the right and adding the percent sign. For example, 0.37 becomes 37% because 0.37 × 100 = 37, so you write 37%. The rule works for any decimal: 0.5 becomes 50%, 0.008 becomes 0.8%. Moving the decimal left two places would yield a much smaller number, not the percent value. Multiplying by 10 changes the scale in a way that doesn’t align with the idea of percent unless the starting decimal already reflects that specific rate. Dividing by 100 would convert a percent back to a decimal, not convert a decimal to a percent.

To convert a decimal to a percent, you express the same number as a portion of 100. Multiply by 100, which is the same as moving the decimal point two places to the right and adding the percent sign. For example, 0.37 becomes 37% because 0.37 × 100 = 37, so you write 37%. The rule works for any decimal: 0.5 becomes 50%, 0.008 becomes 0.8%.

Moving the decimal left two places would yield a much smaller number, not the percent value. Multiplying by 10 changes the scale in a way that doesn’t align with the idea of percent unless the starting decimal already reflects that specific rate. Dividing by 100 would convert a percent back to a decimal, not convert a decimal to a percent.