Add and Subtract Rational Numbers on a Number Line Reviiew

Add and Subtract Rational Numbers on a Number Line Review

By Katy Borel

Multiple Choice

Ms Jinenez has a piece of pipe that is 6 feet long to use for two projects. She uses a piece of the pipe that is 3 feet long on her first project. Which statement describes how a number line can be used to find the length of pipe Ms. Jimenez has remaining?

• Start at 3 and then move left 6

• Start at 6 and then move left 3

• Start at 3 and then move right 5

• Start at 6 and then move right 3

Multiple Choice

Ramel has $$9\frac{3}{4}$$  pounds of potatoes to peel for a dinner he is catering. He has peeled $$2\frac{1}{2}$$  pounds. Which equation describes how a number line can be used to find how many pounds of potatoes Ramel has left to peel?

• $$9\frac{3}{4}+2\frac{1}{2}=12\frac{1}{4}$$  

• $$9\frac{3}{4}-2\frac{1}{2}=7\frac{1}{4}$$  

• $$2\frac{1}{2}-9\frac{3}{4}=-7\frac{1}{4}$$  

• $$-2\frac{1}{2}-9\frac{3}{4}=-12\frac{1}{4}$$  

Multiple Choice

Carlton bought stock at $5.25 for each share. The price of the stock decreased $3.75 after one month. It then increased $1.85 and $2.25 over the next two months. What is the price of the stock now?

• $2.60

• $4.90

• $5.60

• $13.10

Open Ended

Mason answers a question correctly in a trivia game and now has 0 points. The question was worth 15 points. Mason uses a number line to represent the number of points he received for answering the question correctly and the number of points he had before answering the question. Where would the two points be located on the number line.

Open Ended

The temperature in Beeville is -8 degrees C. The temperature in Bolton is 6 degrees warmer than the temperature in Beeville. Plot a point on a number line that represents the temperature in each city.

Multiple Choice

The temperature in Ashwood is 7.5 degrees C cooler than the temperature in Beeville. Which equation shows the temperature in degrees C in Ashwood?

• $$8+7.5=15.5$$  

• $$8-7.5=0.5$$  

• -8+7.5=-0.5

• -8-7.5=-15.5

Open Ended

A remote-controlled plane is flying 14 meters above the ground. The plane rises 3.5 meters before diving 7.5 meters. Draw a number line to represent this scenario.