Perform the Indicated Operations Without a Calculator: 42 + 158

question 27

Multiple Choice

Perform the indicated operations without a calculator: 42 + 158 + 780 + 2 =

• A)981
• B)982
• C)11,192
• D)971

---

Definitions:

Past Week

A term indicating the period of seven days immediately preceding the current day.

Chlorine Level

The concentration of chlorine present in a substance, commonly measured in water to ensure safety and hygiene.

Confidence Interval

A range of values derived from sample data that is likely to contain the true population parameter with a specified level of confidence.

Water Park

A recreational facility featuring water play areas, such as swimming pools, water slides, and splash pads.