Example 1.62 from Elementary Algebra, 1.4 Multiply and Divide Integers

Multiply and Divide Integers: example 1.62

The temperature in Urbana, Illinois one morning was 11 degrees. By mid-afternoon, the temperature had dropped to $−9$ degrees. What was the difference of the morning and afternoon temperatures?

Work it out on paper first. Then open the solution one step at a time, and stop as soon as you can finish on your own.

Solution

Your turn

The book's Try It right after this example: same idea, new numbers. Only the answer is given.

The temperature in Anchorage, Alaska one morning was 15 degrees. By mid-afternoon the temperature had dropped to 30 degrees below zero. What was the difference in the morning and afternoon temperatures?

How did it go?

Your turn

The book's Try It right after this example: same idea, new numbers. Only the answer is given.

Solution

Your turn

Solution

Your turn