Lesson 3
Negative Numbers
Real values of less than nothing
Page 99
The problem was 8 − ( − 6). You must have changed the signs of both the numbers instead of changing just the sign of the number being subtracted.
Here is how you should have proceeded:
sign changed
↓
8 − ( − 6) = ( + 8) − ( − 6) = ( + 8)
+
( + 6)
= ?
↑
add instead of subtract
Now it’s easy, isn’t it? Return to Page 103 and choose another answer.
