Rational Numbers
Is this rational?
0.353535353535
yes
Solve these problems.
-4 + 4
2 + (-5)
-5 + 6
36 + (-7)
0
-3
1
29
Evaluate.
11(-3)
-24/-6
-15(-5)
48/-8
-33
4
75
-6
Compare using >, <, or =.
⎮-8 - (-15)⎮ ? ⎮-3 + (-4)⎮
=
Subtract: 8/9 - (-2/3)
14/9 or 1 5/9
Explain how you would subtract integers.
You need to change it to an addition problem. Keep, change, flip (or change).
An elevator steadily descends 220 feet in 20 seconds. What is the change in the elevator’s height per second?
11 feet per second
A fern in Jerry's backyard is 2.8 feet tall. A tree next to the fern is 3 ½ times as tall as the fern. How tall is the tree?
9.8 feet
What makes 𝝿 irrational?
it cannot be written as a fraction and it is not a decimal that terminates or repeats.
Evaluate.
-11 + (-6) - 2
27 - (-10) + (-40)
18 - 24 + 5
-19
-3
-1
Simplify.
7.68 ÷ 0.4
19.2
Which of the following expressions are equivalent to -5/12?
A. 12/-5
B. - (-5/-12)
C. 5/-12
D. -10/24
E. -⎮5/-12⎮
F. 5/12
B
C
D
E
The temperature was 75 degrees. At noon, the temperature increased 7 degrees. By evening, the temperature decreased by 7. How did the temperature change?
The temperature is back to 75 degrees. It did not change as 7 and -7 are opposites and combine to zero.
The high temperature for the day is 3 degrees. The low temperature is -10 degrees. What is the difference between the high temperature and the low temperature? Write a number sentence to find the difference. Then solve.
3 - (-10)
3 + 10
= 13 degrees
Mr. Kardos is training for the turkey trot this Thanksgiving. He ran for 11 and ¼ miles total, 6 days this week. How far did Mr. Kardos run each day? Write the problem, then solve.
11 ¼ ÷ 6
45/4 × 1/6
1 7/8 miles a day
What is 3 4/5 + 5 ½?
9 3/10 or 93/10
Convert 1/18 into decimal form.
0.05555555...
Which expressions are equivalent to 6 - 4.5 + (-8)? Select each correct answer.
A. 6 + 4.5 + 8
B. 6 + 4.5 - 8
C. 6 - 4.5 + 8
D. 6 - 4.5 - 8
E. 6 + (-4.5) - 8
F. 6 + (-4.5) + (-8)
G. 6 + (-4.5) - (-8)
D
E
F
A student has a bus pass with a balance of $30.00. Each time the student rides the bus, the balance on the bus pass decreases by $2.25. If the student rides the bus 8 times, what would be the remaining balance on the bus pass?
$12.00
Ms. Memeti exercised by stretching and weight lifting 5 days last week.
How many minutes did Ms. Memeti weight lift each day last week?
48 minutes per day