Worked examples
Two examples
Example 1
−8 + 8 =
- The two numbers are opposites, the same distance from zero. A zero pair.
Answer: 0
Example 2
−11 + (−4) =
- Same signs, Rule 1: 11 + 4 = 15, and keep the negative sign.
Answer: −15
Where this is taught: Signed Numbers, Part 6
The drill
Ten problems
How many:
Type each answer, then press Check my answers at the bottom. For a minus sign, the hyphen key (-) is fine.Write each answer on the line. The answer key, with the reasoning, is on the last page.