How do you evaluate #-2.4- 4.8#?
2 Answers
See below: answer
Explanation:
First you need to know the rules:
1. When you are multiplying with two negative signs the answer will always be positive.
2. When you are multiplying with two positive signs you will get positive answer.
3. When you are multiplying with different signs you will get a negative answer.
However, in this case we are ADDING two negatives.
So:
e.g So if you go from
This is the same you have to do with your question with the decimals
To check your answer you can type it in the calculator.
Using the positive/negative button - type in -2.4 - 4.8 and you will get
Hope this helps
Explanation:
Compare
They both represent an addition.
However, the first is the addition of positive numbers which means moving to the right, UP the number line.
The second is the addition of negative numbers which means moving to the left, DOWN the number line.
Adding positive and negative numbers can be summarised as:
If the signs are the SAME: keep the sign and find the sum (add).
If the signs are DIFFERENT: keep the sign of the bigger number and subtract.