Showing posts with label 8th grade. Show all posts
Showing posts with label 8th grade. Show all posts
Wednesday, August 25, 2010
6th - 8th grade
Last year the Vikings had a 12-4 record. The Twins play 162 games per season. If they have the same winning percentage as the Vikings, how many games will they win?
Labels:
6th grade,
7th grade,
8th grade,
percents,
proportions
Tuesday, August 24, 2010
5th - 12th grade
Continue the pattern
1, 2, 10, 11, 12, 20, 21, 22, 100, 101, ...
1, 2, 10, 11, 12, 20, 21, 22, 100, 101, ...
Labels:
10th grade,
11th grade,
12th grade,
5th grade,
6th grade,
7th grade,
8th grade,
9th grade,
patterns
6th - 8th grade
Megan's summer job pays either minimum wage ($7.25 per hour) or 20% commission on what she sells. If megan works for 8 hours and sells $450 worth of stuff, should she be paid minimum wage or commission?
Bonus: If she takes the commission, what is the equivalent hourly rate?
Double Bonus: If she takes the hourly wage what is the equivalent percent commission?
Bonus: If she takes the commission, what is the equivalent hourly rate?
Double Bonus: If she takes the hourly wage what is the equivalent percent commission?
Tuesday, September 8, 2009
5th - 8th grade
Bill has 7 students in his basketball team. Only 5 can play at once. How many different groups of 5 students can have on the court at a time?
Hint: it's easier to think of the reverse of this questions - how many different groups of 2 students can sit on the bench.
Hint: it's easier to think of the reverse of this questions - how many different groups of 2 students can sit on the bench.
Labels:
5th grade,
6th grade,
7th grade,
8th grade,
combinations,
permutations,
probability
Monday, August 10, 2009
7th - 10th grade
An iphone screen is 3.5" measured diagonally at a ratio of 3:2. Jennie's TV is 31.5" measured diagonally and at a ratio of 16:9. How many iphone screens would it take to make a picture the size of Jennie's TV?
Labels:
10th grade,
7th grade,
8th grade,
9th grade,
Pythagorean Theorem,
ratios
Thursday, April 16, 2009
Wednesday, April 15, 2009
6th - 10th grade
Vani Dug a hole 3 feet deep, 2 feet wide, and 4 feet long. How much dirt is in her hole?
Labels:
10th grade,
6th grade,
7th grade,
8th grade,
9th grade,
trick question,
volume
8th - 9th grade
John has $5 more than Bill.
Greg has twice as much as John.
Together they have $87.
How much money does each person have?
Greg has twice as much as John.
Together they have $87.
How much money does each person have?
4th - 10th grade
Christina has two jars of marbles. The red jar has 100 red marbles. The blue jar has 100 blue marbles. Christina takes 20 marbles from the red jar and stirs them into the blue jar. Then she takes 20 marbles from the blue jar and stirs them into the red jar. Which jar has the most marbles of the opposite color?
Labels:
10th grade,
4th grade,
5th grade,
6th grade,
7th grade,
8th grade,
9th grade,
critical thinking,
trick question
Wednesday, March 18, 2009
Wednesday, February 18, 2009
5th - 8th grade
Christina scored an average of 76 on her first 4 tests. She wants to get an A- Average on her tests. What grade must she core on the 5th test to increase her average to 90 so that she can earn an A-?
Labels:
5th grade,
6th grade,
7th grade,
8th grade,
average,
number sense,
problem solving
Thursday, February 12, 2009
5th - 9th grade
How many 3-digit numbers are palindromes - the same when read forward or backwards like 828?
Tuesday, February 10, 2009
3rd - 8th grade
Find the sum of all the numbers between 0 and 100 that are spelled with the letter "v".
Labels:
3rd grade,
4th grade,
5th grade,
6th grade,
7th grade,
8th grade,
computation,
number sense
8th - 11th grade
If you continue the pattern
1/8, 1/4, 1/2, 1/1, 1/0.5, 1/0.25, ...
forever, what is the value of the final term?
1/8, 1/4, 1/2, 1/1, 1/0.5, 1/0.25, ...
forever, what is the value of the final term?
Labels:
10th grade,
11th grade,
8th grade,
9th grade,
number sense,
patterns
Tuesday, January 20, 2009
7th - 11th grade
In Deal or no Deal 1 case is worth $1 Million. The other cases are not. The player selects a case, then begins to open the other cases. After 18 cases have been opened and found to not have the $1 Million, there are two cases left. The player then has a chance to switch cases. Should the player switch cases?
Hint: What is the probability the $1 million is in the original case, and what is the probability that it is in the other case? They're not the same!
Hint: What is the probability the $1 million is in the original case, and what is the probability that it is in the other case? They're not the same!
Labels:
10th grade,
11th grade,
7th grade,
8th grade,
9th grade,
probability,
statistics
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Count the rectangles.