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Grades 6, 7 and 8 - Math - Middle School - Algebra - Proof
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Avg score: 80% • Most missed: “You can never work out the exact area of a circle; what is the proof?”

It is essential to be exact in math. If you can find a simple proof that precisely describes all cases of a particular situation it can save you time - no more checking a lot of different values.
 

Grades 6, 7 and 8 - Math - Middle School - Algebra - Proof
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10 Questions

1. With the exception of the number 2, all prime numbers are odd numbers; what is the proof?
2. The word horse has 5 letters beginning with the letter H and so does the name Henry which proves Henry is a horse. Why is this statement false?
3. To prove a result is the same as to ....... the result?
4. 345,345,345,345 when doubled will be an even number; what is the proof?
5. Sam says that the sum of two prime numbers is always even. How could you prove if he is right or wrong?
6. You can never work out the exact area of a circle; what is the proof?
7. When x is an integer, 2x - 1 will always be an odd number, regardless of the value of x; what is the proof?
8. Simon says that if a number is not prime it will always have an even number of factors. Which of these statements proves that he is wrong?
9. Which of the following is a correct definition of 'proof'?
10. If one of the angles in a triangle is 90° the other two angles must add up to 90°. What fact is used to prove the truth of this statement?

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