What is the sum of 0.7 and 0.5 in decimal form?

Study for the TABE Math Test. Practice with flashcards and multiple-choice questions, each question offers hints and explanations. Get ready for your exam!

Multiple Choice

What is the sum of 0.7 and 0.5 in decimal form?

Explanation:
When adding decimals, line up the decimal points and add each place value, starting with the tenths here. 0.7 is seven tenths and 0.5 is five tenths, so together you have 7 + 5 = 12 tenths. That’s 1 whole and 2 tenths, which is 1.2. You can also see this by converting to fractions: 7/10 + 5/10 = 12/10 = 1.2. The other possible sums would correspond to having 10 tenths (1.0), 11 tenths (1.1), or 13 tenths (1.3), which aren’t the total here.

When adding decimals, line up the decimal points and add each place value, starting with the tenths here. 0.7 is seven tenths and 0.5 is five tenths, so together you have 7 + 5 = 12 tenths. That’s 1 whole and 2 tenths, which is 1.2. You can also see this by converting to fractions: 7/10 + 5/10 = 12/10 = 1.2. The other possible sums would correspond to having 10 tenths (1.0), 11 tenths (1.1), or 13 tenths (1.3), which aren’t the total here.

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