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Addition Algorithm
The document outlines a 3-step algorithm for adding integers: 1) Determine if the integers have the same or opposite signs. 2) If same, use the common sign. If opposite, use the sign of the integer with the larger magnitude. 3) If same, add the magnitudes. If opposite, subtract the smaller magnitude from the larger. It then provides examples and discusses adding multiple integers by first adding all positives, all negatives, and then combining the results.
Addition Algorithm
- 1. Algorithms for IntegerArithmetic Addition Algorithm
- 2. Three Steps to Adding Two Integers STEP 1. Do they have the same sign ? (both positive or both negative) or Do they have opposite signs ? (one positive and the other negative)
- 3. Same Signs STEP3. Now enter the sum of the absolute values: (add the magnitudes) STEP 2. Enter the common sign:
- 4. Opposite Signs STEP3. Enter the difference of the larger magnitude and the smaller: STEP 2. Enter the sign of the number having the larger magnitude:
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- 6. Step 1 Theyhave opposite signs. Same or opposite signs?
- 7. Step 2 Enterthe sign of the number having the larger magnitude: |-34| = 34 > 12 = |12|
- 8. Step 3 Subtractthe smaller magnitude from the larger and enter the result.
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- 10. Step 1 Theyhave opposite signs. Same or opposite signs?
- 11. Step 2 Enterthe sign of the number having the larger magnitude: |29| = 29 > 14 = |-14|
- 12. Step 3 Subtractthe smaller magnitude from the larger and enter the result.
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- 14. Step 1 Theyare both positive. Same or opposite signs?
- 15. Step 2 Thesign is positive.
- 16. Step 3 Addthe magnitudes and enter the result.
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- 18. Step 1 Theyare both negative. Same or opposite signs?
- 19. Step 2 Thesign is negative.
- 20. Step 3 Addthe magnitudes and enter the result.
- 21. Adding Many Integers1. Add all the positive numbers and add all the negative numbers: 2. Add the two signed numbers:
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- 38. Work it out!Rigid use of an algorithm is not always best.
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- 41. Moral Look beforeyou leap! Many problems can be worked in your head if you do things in the right order.