Probability
Two coins are tossed, find the probability that two heads are obtained.
0.25 or ¼.
A herd of 40 goats has 23 white and some black goats. What is the ratio of black goats to all goats?
17:40
Is 7 a prime or composite number?
Prime.
How many sides does a square have?
4
Name the property used in this statement 25 + 9 + 12 + 7 = 7 + 12 + 9 + 25
Commutative
A jar contains 3 red marbles, 7 green marbles, and 10 white marbles. If a marble is drawn from the jar at random, what is the probability that this marble is white?
0.50 or ½
Jane has pet dinosaurs, 18 of the dinosaurs are sweet and 30 of the dinosaurs are mean and will eat her. What is the simplified ratio of the sweet dinosaurs and the that dinosaurs will eat her?
3:5
What is -4-(-2)?
-2
How many sides does a circle have?
0
Fill in the blank:
According to the __________ _______ of addition, the sum of three or more numbers remains the same regardless of how the numbers are grouped.
Associative Property
There are 18 kids in Mrs. Trunchbulls' class. There are 7 girls, 9 boys, and 2 aliens. If Mrs. Trunchbull picks a student at a random to put in the chokey, what is the probability that it will not be an alien or girl? Make sure to reduce.
1/2 or 0.5
According to an aquarium manager, the perfect fish exhibit has a ratio of 240 fish to 3 tanks. How many fish are needed if the aquarium has 9 tanks?
720 fish.
What is 4/5 + 2/10?
1
Is 90 degrees a right angle?
Yes.
Solve this identity property of addition problem:
4803 + 86 + 27 + 0
4916
Jacey is going to get a new pet for her birthday! She has all of the options written down in a hat. Some of the options are written down more than once, here is the list: Dog 2, cat 2, guinea pig 3, bird 4, snake 1, fish 1. What is the probability that she will NOT pick a dog, cat, or fish?
Answer 8/13
There are 600 kids trying out for track and felid team. The ratio of boys to girls is 3:5. How many girls are trying out for the team? How many boys?
Number of girls 375.
Number of boys 225.
(-2) + 9 − 5 + 4?
6
The gaga pit has eight sides. What is the shape of the gaga pit?
Octagon
Apply the distributive property to create an equivalent expression. 6(5x−3).
30x - 18
The blood groups of 200 people are distributed as follows: 50 have type A blood, 65 have type B blood type, 70 have type O blood type and 15 have type AB blood. If a person from this group is selected at random, what is the probability that this person has O blood type?
Answer 0.35 or 7/20.
Seth falls 4 times every hour, if he stays at the same rate, how many times will he fall in the span of three weeks.
2016 times.
Students in a 4th grade P.E. class ran 2 timed laps. The first timed lap they ran, they got these times (in seconds): 15.4, 17.0, 17.4, 17.5, 17.9, 20.6, 23.0, 24.5.
The second time they ran a lap, they got these scores: 16.7, 20.5, 19.3, 30.1, 18.4, 24.8, 15.9, 19.2. Find the mean of both lap times.
Lap 1 = 19.1625.
Lap 2 20.612.
One of the sides of an equilateral triangle is 15 inches. What is the perimeter of the triangle?
45
A volleyball uniform costs $13 for the shirt, $11 for pants, and $8 for socks. Find the total cost of how much 12 uniforms would be.
384