Hard math problems for 8th graders

What is the height one of the legs and the hypotenuse of an isosceles right triangle that has an area of square feet? So we pulled five questions from the 8th grade mathematics test -- they're after the jump with the hidden answers.

Think back to that problem about the dogs at the dog show and use the same logic to solve this problem. Which of the graphs below best represent the changes in the height of water in the tank as a function of the time? If they start rotating now from the same point, when will they be at the same starting point again?

8th grade math book

Find the height h of water in both containers. Point A has the coordinates 2,2. He then drove at the speed of 55 miles per hour for the same distance. Malika is shorter than tania. Also, 6 is the only number not represented out of numbers 1 through 9. The size of the perimeter of the square ABCD is equal to cm. Question: What is 1. Every day, the patch doubles in size… … If it takes 48 days for the patch to cover the entire lake, how long would it take for the patch to cover half of the lake? This tank is being filled at the rate of 12 liters per minutes. Answer: 1. How long does it take the two pumps working together to fill the tank? Question: How many small dogs are signed up to compete in the dog show?

Image via YouTube This problem might look easy, but a surprising number of adults are unable to solve it correctly. Water is being pumped, at a constant rate, into an underground storage tank that has the shape of a rectangular prism.

hard math problems with answers

The student who selects this response understands that the table of a function is the set of ordered pairs consisting of an input and exactly one corresponding output. If the radius of a cylindrical container is doubled, how do you change the height of the container so that the volume will stay the same?

If a person is selected at random from this group, what is the probability the person's age is less than 20? Question: How many small dogs are signed up to compete in the dog show?

The dirt will be taken away in a truck that holds 4.

Hard math problems for 8th graders

If the area is m2 what is the length of the rectangle? Not too bad, right? This elementary school-level problem is a little less problem solving and a little more memorization. Express your answer in centimeters per minute. Question: Add 8. A student who selects this response understands how to use facts about supplementary, vertical, and adjacent angles in a multi-step problem to find an unknown angle in a figure. Explanations are direct from the sample questions. Initially the rectangular prism on the left was full of water. What is the probability that the number rolled is an even number greater than 2? Answer: 0. Answer: 5, A car traveled miles in 4 hours 41 minutes. Find the ratio of the boys in school A to the girls in school A.

Cheryl gives them a list of 10 possible dates. The Common Core and standardized testing have gotten a lot of attention much of it criticism over the last year.

Grade 8 math word problems pdf

Which graph best represents the changes in the distance from home as Peter was driving? We didn't include any of the English language arts questions from the 8th grade test because they involved reading longer passages -- here's the test if you'd like to have a look. Two different schools A and B have the same number of pupils. One pump fills a tank two times as fast as another pump. Either way, very few individuals—even math teachers—have been able to find the correct answer to this problem. Answer: 1. Image via YouTube This problem might look easy, but a surprising number of adults are unable to solve it correctly. Answer: July Express your answer in centimeters per minute. Question: Replace the question mark in the above problem with the appropriate number. Question: What is the number of the parking space covered by the car? Then water was poured in the right cylindrical container so that the heights of water in both containers are equal. In order to solve this problem, you simply need to subtract the exponents and solve for 32, which expands into 3 x 3 and equals 9. The dirt will be taken away in a truck that holds 4. Answer: 0.
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8th Grade Math