Algebra
Miss G. Worked from 4:30 am to 9:00 am. How many hours did Miss G. Work?
4 hours 30 minutes
What do we call a figure that is scaled to twice its size?
dilation
Find the mean of 1, 3, 5, 7, 9
Multiply any number by 9. If you add the digits of the result, you always get the same number. What number is it?
9
100−99+98−97+96−95
3
Solve for x:
x/5 + 2/3 = 1
Express answer as a fraction.
5/3
Do the following lengths make sides of a triangle?
a = 2, b = 6, c = 10
No
You roll a fair 6-sided die. The probability you get a number divisible by 3 is this fraction.
1/3
4,589 - 2,588
2,001
1,111 x 1,111
1234321
Convert into y=mx+b form.
2x + y -10 = 9x - 7
y= 7x +3
A triangle has sides 5, 12, and 13. What kind of triangle is it?
Right Triangle
A bag contains 3 red, 4 blue, and 5 green marbles. If you pick one marble at random, what is the probability it is red or blue? Give yours answer as a fraction.
7/12
What is the next number in this sequence?
1, 4, 9, 16, …
Of the first 200 primes, how many are odd?
199
Is (3,-4) a solution to the equation 3x - 4y = 25.
Yes
The sum of the interior angles of this polygon is 540 degrees. What polygon is it?
Pentagon
The scores of 5 students are: 10, 12, 14, 16, 18. One student improves by 5 points. What is the new average?
15
I am a three-digit number. All my digits are the same. When you divide me by 3, the quotient is a two-digit number with both digits the same. What number am I?
111
What is the greatest integer n that satisfies
100² - n² = n² - 100²
100
Given the system of equations:
2x - y = 2
y = 2(x-1)
What is the solution?
Infinite solutions
The sum of the interior angles of a polygon is 1440º. How many sides does it have?
10
Set A contains 5 numbers with an average of 10. Set B contains 5 numbers, where each number in B is twice the corresponding number in A. What is the average of the numbers in set B?
20
This sequence starts with 0 and 1, and each number afterward is the sum of the two numbers before it. It often appears in nature, such as in the arrangement of leaves or flowers. What is the name of this sequence?
Fibonacci sequence
At 12:00, the hour and minute hands of a clock overlap. How long will it take for them to overlap again? Give your answer in minutes.
65 5/11 minutes