Monthly school-wide math assessments start Thursday... prepare!

This year all 8th grade student's will be completing monthly quizzes to judge mathematical progress school-wide. The first quiz will be given this Thursday, September 7th during the regular math block and will be ten review questions from the 7th grade curriculum. Please prepare by reviewing the following:
1. Integer rules
2. Exponent laws
3. Surface area formulas
4. Pythagorean Theorem
5. Key words
6. Inverse operations

Review by completing the following questions from last year's 7th grade mathematics state exam. (10 points extra credit will be given to any student who completes the 10 questions below correctly).
1. Friday Sara babysat and made $25. Saturday she babysat for 4 hours at a rate of $5 per hour. If she bought an $18 CD on Sunday, how much did she have left?
2. What shape is the base of a cylinder?
3. Find the lowest common multiple (LCM) of the following numbers 3, 6, 27
4. Find the range of 25, 10, 22, 31, 13
5. Convert 250L to mL if 1 L = 1000mL
6. Find the greatest common factor (GCF) of 28, 42, 56
7. How many different combinations for lunch if there is spaghetti or pizza and apple, OJ, or milk?
8. Convert 169,000,000 to scientific notation,
9. If I drove 34 miles on Friday then the same amount of miles on Saturday and Sunday but a total of 118 miles overall, how many miles did I drive on Saturday?
10. If the circumference of a circle is 18pi find the radius of the circle.