Vocab
Additive Inverse
Opposites are two numbers that have the same distance from zero or same absolute value, but different signs.
What is the sum of opposites? What is the opposite of zero?
The sum of opposites is always zero. The opposite of zero is zero.
What are your IM notes and when should use them?
C = combine/add
D = difference/subtract
+ = positive sum
- = negative sum
We use IM notes when we are adding integers.
What are the addition integers rules?
-If the signs are the same, add the absolute values, and keep the shared sign.
-If the signs are different, subtract the absolute values, and keep the sign of the larger absolute value.
Subtracting a negative is the same thing as...
Adding a positive
How do you solve a subtraction expression?
1. Change the subtraction expression to addition expression by adding the opposite
2. Evaluate using the addition rules.