Page 28 - Math Course 1 (Book 1)

Subtracting Integers

Examine

Think of a thermometer. The difference between 112° above zero and 37° below zero
must be 112° + 37° or 149°. The answer appears to be reasonable. 1490

Your Turn!

Subtract a Positive Integer Subtract a Negative Integer

Find 6 – 8. A. 2 C. -3 Find 8 – (–2) A. 6 C. -6
B. -2 D. 14 B. 10 D. 16

Answer Answer

Find -19 – 13. A. -22 C. 4 Find –12 – (–5). A.17 C. -17
B. -4 D. 22 B. 7 D. -7

Answer Answer

REAL WORLD EXAMPLE

WEATHER
Answer
The table shows the record high and low
temperatures recorded in selected states.
What is the range for Washington?
Lowest Highest
State
Temperature(0F) Temperature(0F)
Utah -69 117

Vermont -50 105

Virginia -30 110

Washington -48 118

West Virginia -37 112

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