TRINITY MATH TRIATHLON

1.   Solve for x: 
2.  Find the area of the triangle below.

3.  What is 45% of 20?
4.  What is 20% of 45?
5. Simplify: 
6.  Find three times the sum of three and one-half.
7. Find the average of 30, 20, 50, 45, and 65.
8. How many cubic millimeters are in one cubic centimeter?
9. There are sixty children that want to play kickball during a 30 minute recess.  If only fifteen children can play at a time, what percentage of children can play?
10. How many sides does a hexagon have?
11. A circular pizza has circumference 5.  What is its exact area?
12. What is the least common multiple of 6, 8, and 10?
13. What is the greatest common divisor of 48, 60, and 100?
14. Find the missing number of the Pythagorean triple: 7, _____, 25.
15. If the lengths of the legs of a 30^o-60^o-90^o triangle are 8 and , what is the length of the hypotenuse?
16. What is 36,542,300 in scientific notation?
17. What is the perimeter of a square with sides of 6 centimeters?
18. Rewrite 47/100 as a percentage.
19. Simplify: 
20. What is 12% of 50?
21. Evaluate: 14 - 7 - 4
22. What is 50 percent of 30?
23. What is 30 percent of 50?
24. True or False: Every square is a rectangle.
25. What is one-half of one-third?
26. Find the mean of the following numbers: 513, 487, 510, 490, 491, 509.
27. True or False: Every equilateral triangle is acute. 
28. If you can buy 3 grapefruit for 69 cents, then how much would 5 grapefruit cost?