Question

In a lab, a substance was heated by 2c each hour for 6 hours. What was the total change in temperature?

Answer 1

12 c

Explanation:

You can add up the hourly changes, or you can use multiplication to do the repeated addition. The increase in temperature over 6 hours is ...

2c +2c +2c +2c +2c +2c

= 6 × 2c

= 12c

The total change in temperature was an increase of 12c over the 6-hour time period.