NAME _____________________________________________ DATE ____________________________ PERIOD _____________
Lesson 4 Problem-Solving Practice
Multiply and Divide Integers
1. During a 10-day period, the balance of Marta’s
checking account dropped $290. Write a division
expression to represent the change. Then determine
the average daily change in account balance during
that 10-day period.
3. The lowest point of elevation in the United States is
at Death Valley National Park in California at
282 feet below sea level. The Dead Sea in Israel is
1,360 feet below sea level. Write a division
expression that could be used to find how many times
greater the Dead Sea lies below sea level than Death
Valley. Then determine how many times greater.
Round to the nearest whole number.
5. For one full week, Cheng spent $12.50 per day on
lunch. Write a multiplication expression using
integers to show the overall impact or change to the
total amount of money he had budgeted for food
expenses. Then determine and explain that amount.
2. The table shows the scores (with relation to par) for
Sam and his 3 golf league partners during their last
round. Write an expression that represents the mean
of their scores. Then determine this value.
Place
Golfer
Score
1
Sam
–6
2
Jeff
–4
3
Justin
+2
4
Bailey
+8
4. The price of a stock decreased $4 per day for five
consecutive days. Write a multiplication expression
to show the total change in the price of the stock for
that five-day period. Then determine and explain
that change.
6. Water is draining from an aquarium at a rate of
3 gallons per minute. Write a multiplication
expression using integers to show the total change to
the amount of water in the aquarium after 45 minutes
of draining. Then determine and explain that
amount.
Course 2 • Chapter 1 Rational Numbers