Worked examples
Two examples
Example 1
−6 + 11 =
- Adding, different signs. First subtract: 11 − 6 = 5. The original larger absolute value is 11, positive.
Answer: 5
Example 2
3 − (−7) =
- Subtracting. Rewrite: 3 + 7.
Answer: 10
Where this is taught: Signed Numbers, Part 8
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.