CN 2-2 adding integers.notebook CN 2-2 Day 1 Addi… · Opposites two numbers with the same...
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CN 22 adding integers.notebook 1 September 08, 2016 page 107108
Transcript of CN 2-2 adding integers.notebook CN 2-2 Day 1 Addi… · Opposites two numbers with the same...
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page 107108
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Opposites two numbers with the same absolute value but different signs
Ex.
Additive inverse
The sum is always equal to _________.
Example of additive inverse property: __________
Quick Review:
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Opposites and Additive Inverse
10 9 8 7 6 5 4 3 2 1 0 +1 +2 +3 +4 +5 +6 +7 +8 +9 +10
Examples ____________________________
______________________________________
______________________________________
Additive Inverse_______________________
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an integer added to its opposite.
Its sum is always equal to zero.
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Evaluate the following:
1) 5 + 12
2) 3 + 9
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1) 2 + 10
2) 6 + 14
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Expression:
Simplify:
Meaning:
Expression:
Simplify:
Meaning:
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When the signs are the same:
1) Find the sum of the absolute values 2) Keep the sign
ex. 12 + 20 = 32ex. 12 + 20 = 32
When the signs are different:
1) Find the difference by subtracting the smaller absolute value from the larger absolute value. 2) Use the sign of the integer with the larger absolute value.
ex. 7 + 9 = 2ex. 7 + 9 = 2
Reminder...
Same sign find the sum
Different signs find the difference
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Expression:
Simplify:
Meaning:
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