Prime Factorization
Simplifying Fractions
Ratios as Fractions
Probability
Word Problems
100
What is the prime factorization of 25?
What is 5 X 5?
100
Write 6/9 in simplest form.
Answer: 2/3
100
What is 7/15 of a set that has 30 counters.
Answer: 14 counters
100
On a 6-sided die, what is the probability of rolling an even number?
Answer: 3/6 = 1/2, or 50%
100
There are 24 students in our class. If 3/4 of them ride the bus and the rest walk to school. How many ride the bus each day?
Answer: 18 students
200
2 X 2 X 2 is the prime factorization of what number?
What is 8?
200
Write 15/50 in simplest form.
Answer: 3/10
200
How many counters are in 3/5 of a set that has 45 counters?
Answer: 27 counters
200
On a 6-sided die, what is the probability of rolling a PRIME number?
Answer: 3/6 = 1/2, or 50%
200
What is the ratio of primary colors to all colors in a typical rainbow? (Hint, Roy G. Biv)
Answer: 3/7, 3:7, or 3 out of 7
300
What is the prime factorization of 100?
What is 2 X 2 X 5 X 5?
300
Write 80/100 in simplest form.
Answer: 4/5
300
If 12 counters are in 3/4 of a set, how many is in the WHOLE?
Answer: 16 counters
300
If a spinner is divided into 5 equal spaces, what is the probability of spinning a number LESS THAN 4?
Answer: 3/5, or 60%
300
An ice cream shop offers only 3 different flavors of ice cream (chocolate, vanilla, strawberry). They also offer 4 different toppings (nuts, chocolate syrup, strawberry syrup, sprinkles). How many different combinations can you get with one flavor of ice cream and one topping?
3 flavors X 4 toppings = 12 possible combinations
400
What is the prime factorization of 63?
What is 3 X 3 X 7?
400
Write 12/48 in simplest form.
Answer: 1/4
400
If 1/10 of a set is 4 counters, how many are in the WHOLE?
Answer: 40 counters
400
What is the probability of getting an answer correct on a multiple choice question if given choices A, B, C, or D?
Answer: 1/4, or 25%
400
Explain the difference between a prime and a composite number.
A prime number is one that has only 2 factors (itself and 1), while a composite number has more than 2 factors. The number 1 is neither prime OR composite; it is just 1.
500
What is the prime factorization of 105?
What is 3 X 5 X 7?
500
Write 350/450 in simplest form.
Answer: 7/9
500
If 3/4 of a set is 48 counters, how many are in the WHOLE?
Answer: 64 counters
500
What is the probability of waking up in the morning and having to coming to school on any given day? (This is not a trick question...)
Answer: 5/7, or 71%
500
Mr. Killian can read 9 pages in 15 minutes. At this rate, how many pages can he read in an hour?
Mr. Killian can read 36 pages per hour (9 X 4).
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