Today in class students told me that you have to line up the decimal in order to add and subtract them. They learned that when combining a positive and a negative decimal - you are really finding the difference between them. The sign of the answer, positive or negative, comes from the bigger number.
Answers to HW: 1. - 4.3 6. - 3.17 2. 6.07 7. 10.2 3. - 0.2 8. - 3.47 4. - 5.19 9. 16.9 5. 5.005 10. - 4.8
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October 2018
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