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Example 1.20 from Prealgebra, 1.2 Add Whole Numbers
Add:
Work it out on paper first. Then open the solution one step at a time, and stop as soon as you can finish on your own.
| Write the numbers so the digits line up vertically. | |
| Add the digits in each place value. | |
| Add the ones: Write the in the ones place of the sum and carry the ten to the tens place. |
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| Add the tens: Write the in the tens place and carry the hundred to the hundreds place. |
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| Add the hundreds: Write the in the hundreds place and carry the thousand to the thousands place. |
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| Add the thousands . Write the in the thousands place of the sum. |
When the addends have different numbers of digits, be careful to line up the corresponding place values starting with the ones and moving toward the left.
The book's Try It right after this example: same idea, new numbers. Only the answer is given.
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How did it go?