Rational Number Applications
+ & -
Integers
x & /
Integers
+
Rational Numbers
x
Rational Numbers
100

21 + (-23)

-2

100

-12(-5)

60

200

Use the BOTTOM display that Mr. Gregory shows to solve these questions:

1) What integer is represented by the tiles?

2) How many groups of -2 can I split the picture up into?

3) Write and solve the division problem being done.

1) -12

2) 6

3) -12 / 6 = -2    OR   -12 / -2 = 6

200

-15 + (-12)

-27

200

36 / (-9)

-4

200

Mr. Gregory will rewrite this to make it clearer.

-5 1/4 + (-7/8)

-6 1/8

300

Answer the following question using the TOP display Mr. Gregory gives:

1) How many zero pairs could you make?

2) Will your answer be positive or negative?

3) Write AND solve the problem represented with tiles.

1) 4

2) Positive

3) 5 + (-4) = 1

300

5 - (-2) 

7

300

-6(-7)

42

300

Mr. Gregory will rewrite this to make it clearer.

4 2/5 + (-2 1/10)

2 1/10

400

You are hiking on a mountain and start at an elevation of 50 feet. You descend 10 feet. You ascend 20 feet. You descend 65 feet. What is your ending elevation?

-5 feet

400

-12 - (-7)

-5

400

-24 / (-6)

4

400

(Mr. Gregory will rewrite this to make it clear)

-3 1/5 + 1/2

-2 7/10

-2.7

400

Mr. Gregory will rewrite this to make it clearer.

(-15)(1/5)(-3/4)(-1/3)

-3/4

-0.75

500

On Monday, the temperature started at 47.6 degrees Fahrenheit. On Tuesday, the temperature dropped by 22.5. On Wednesday, the temperature dropped by 40.1. And on Thursday, the temperature raised by 10 1/2 degrees.

What is the temperature on Thursday?

-4.5 degrees

500

-41 - 20

-61

500

(5)(-3)(-2)(4)

120

500

Mr. Gregory will rewrite this to make it clearer.

6 3/4 + (-5/8)

6 1/8

500

(5)(8)(0.2)(-0.5)

-4