Show:
Adding Rational Numbers
Subtracting Rational Numbers
Multiplying Rational Numbers
Dividing Rational Numbers
Decimals and Percents
100
Write an equation which proves the additive inverse of 4
4 + (-4) = 0
100
2-(-8) =
10
100
-6(-9)=
54
100
Classify the quotient as positive, negative, zero, or undefined -15 / -5
positive
100
Is 4 a terminating, repeating, or non-repeating decimal
terminating
200
Suppose a diver dives from the surface to 86 feet below the surface , and then goes down another 12 feet deeper. The diver's depth is represented by the sum -86 + (-12). Find and interpret the sum to represent the diver's new depth. Find the sum -86 + (-12) = What is the diver's present depth? A) -74 feet below the surface B) 74 feet below the surface C) 98 feet below the surface D) -98 feet below the surface
sum = -98 Answer = C
200
A woman enters an elevator, goes up six floors, and then down another 15 floors. Write and solve an equation and describe her position relative to her starting point. Ex. _ - _ = The woman is ______floors _______where she started
6-15=-9 The woman is 9 floors below where she started
200
Is the product positive or negative? (0.96)(-0.76)(0.72)
negative
200
A parachutist descends 52 feet in 4 seconds. Express the rate of the parachutist's change in height as a unit rate. The unit rate of the parachutist's change in height is ____ feet per second
-13
200
At the grocery store, you want to buy 2 3/5 pounds of turkey. What decimal should the digital scale show?
2.6 pounds
300
-14/17 + 3/17 =
-11/17
300
Which of the following expressions represent the distance between -9 and 7 on a number line? |7-9| |-9-7| |-9+7| |7+9| |9-7| |-7+9|
|-9-7| and |7+9|
300
Multiply -4 5/6 x 10 1/2
-50 3/4
300
Divide and simplify 5/6 / -13/7
-35/78
300
250% of 5.2 equals what ?
13
400
-5.5 + (-1.9)
-7.4
400
A bird flies from the bottom of a canyon that is 69 1/5 feet below sea level to a nest that is 798 7/10 above sea level. Write and solve a subtraction expression which represents the difference in elevation between the nest and the bottom of the canyon
798 7/10 - (-69 1/5) = 867 9/10 feet
400
-2.5(-3.5+4)
-1.25
400
9/4 x = 2/5 Solve for x
8/45
400
13/18% of a quantity is equal to what fraction of a quantity?
13/1800
500
At the beginning of the day, the stock market goes down 40 1/2 points and stays at this level for most of the day. At the end of the day, it goes back up 110 1/4 points. Write and solve an equation to show the total change in points throughout the day.
-40 1/2 + 110 1/4 = +69.75 points for the day
500
At a fair last weekend, Shamirah made and sold homemade jewelry. If she sold the jewelry for R dollars and it cost her C dollars to make the jewelry, then the formula P=R-C describes her profit P in dollars. If her profit was $34.07 and she sold the jewelry for $74.84, how much did it cost Shamirah to make the jewelry?
$40.77
500
Is the product positive or negative? -6(-3.2+2.7)(-2.7+3.2)
positive
500
A container holds 70,000 ounces of water. Every 96 minutes, 1.8 ounces of water leaks out. Represent the total change in the amount of water in the container after 6 hours
- 6.75 ounces
500
A forest covers 74,000 acres. A survey finds that 0.2% of the forest is old-growth trees. How many acres are old growth trees ( to the nearest whole acre )
148 acres