What is 122.584 + 15.328?

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 122.584 + 15.328?

Explanation:
When adding decimals, line up the decimal points and add each place value from right to left. Write the numbers as 122.584 and 015.328 so the digits line up by place value. Start with the thousandths: 4 + 8 = 12, write 2 and carry 1. Move to the hundredths: 8 + 2 + 1 = 11, write 1 and carry 1. Move to the tenths: 5 + 3 + 1 = 9, no carry. Now add the whole-number parts: units 2 + 5 = 7, tens 2 + 1 = 3, hundreds 1 + 0 = 1. Put it all together to get 137.912. This is the sum, and it matches the value shown as 137.912. If you see a different decimal result, it usually comes from misplacing a carry or not aligning the decimal points correctly.

When adding decimals, line up the decimal points and add each place value from right to left. Write the numbers as 122.584 and 015.328 so the digits line up by place value. Start with the thousandths: 4 + 8 = 12, write 2 and carry 1. Move to the hundredths: 8 + 2 + 1 = 11, write 1 and carry 1. Move to the tenths: 5 + 3 + 1 = 9, no carry. Now add the whole-number parts: units 2 + 5 = 7, tens 2 + 1 = 3, hundreds 1 + 0 = 1. Put it all together to get 137.912. This is the sum, and it matches the value shown as 137.912. If you see a different decimal result, it usually comes from misplacing a carry or not aligning the decimal points correctly.

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