Word Problems on Multiplying and Dividing Negative Numbers
Grade 7 Math Worksheets
What are the rules for multiplying integers?
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How do you divide negative numbers?
Now let us discuss some word problems on this.
Example: Daisy joined a gym 8 weeks ago and she lost kg every week. Write an equation that describes the above situation.
Since Daisy lost kg every week, so the equation which describes the above situation =
– × 8 = -4 kg, which means she lost 4 kgs in 8 weeks.
Example: If the temperature changed at a rate of -3°C per hour, then after how many hours did the temperature reached -12°C?
Number of hours for the temperature to reach from -3°C to -12°C = = 4 hours
Check Point
- John dives from the surface of water at a rate of 2 feet per second. Where will he be from the surface of water after 30 seconds?
- If a football team’s 2 plays resulted in a loss of 5 yards, then what integer represents the total number of yards they lost in 2 plays?
- If the cost of one share of a company declined a total of $30 in 5 days, then what integer represents the cost of one share by which it declined on an average per day?
- A daily soap opera lost a total of 5,000 viewers in the last 5 months. If it lost the same number of viewers in each month, then write an equation to represent the number of viewers lost in one month.
- If the height of an old person decreased by a total of 1 cm in 5 years and it decreased by the same amount each year, then what integer represents his change in height every year?
Answer key
- -60 feet
- -10 yards
- -6 dollars
= -1000
- -0.2 cm
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