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7th Grade Mathematics CRT Study Guide 3rd Quarter 2007 MATH 7 STUDY QUESTIONS You may use a 4-function calculator and the reference sheet provided to complete this test. 1. Add: 12 1 2 +3 9 3 2. Add: 18 2 1 +5 7 3 3. Subtract: 6 1 3 4 2 5 4. Subtract: 9 2 5 2 3 6 5. Multiply: 3 3 4 6 5 7 6. Divide: 4 3 4 2 7 5 7. Simplify: -10 - (-7) + 5 8. Simplify: 15 - (-3) + 9 9. Divide and round your answer to the nearest tenth: 162.4 -12 10. Multiply and round your answer to the nearest tenth: 236.8 -13 11. Simplify: 21% of 168 = _____ 12. Simplify: 15% of 278 = _____ 13. A bag contains 5 blue marbles, 6 green marbles, and 10 yellow marbles. Twice you draw a marble and replace it. Find P (blue, then green). 14. A bag contains 3 blue marbles, 8 green marbles, and 13 yellow marbles. Twice you draw a marble and replace it. Find P (blue, then green). 15. If the spinner is spun twice, what is the probability that the spinner will stop on a consonant then again on a consonant? 16. If the spinner is spun twice, what is the probability that the spinner will stop on a vowel then again on a vowel? 17. A drawer contains 3 red socks, 6 white socks, and 9 blue socks. Without looking, you draw out a sock and then draw out a second sock without returning the first sock. Find P (blue, then blue). Page 1 of 4 7th Grade Mathematics CRT Study Guide 3rd Quarter 2007 18. During one team’s season, the ratio of the number of games the team won to the number of games the team played was 3 to 6. The team played 64 games. How many games did the team win? 19. In 25 minutes, Jane can run 7 laps around the track at her school. If her pace stays the same, how many laps should Jane be able to run in 1 1 hours? 4 20. The star football player on the team scored 14 touchdowns on his first 57 runs. The football players had a total of 228 runs. If the football players maintained their rate of touchdowns, about how many touchdowns did they make in all? 21. A machine takes 8.5 hours to make 24 parts. At that rate, approximately, how many parts can the machine make in 24 hours? 22. Jamie saves 15 cents out of every dollar she earns. Jamie earned 79 dollars last week. How much money did she save? 23. This stem-and-leaf diagram shows test scores for Mr. Harris’s class. What is the class mean, median, mode and range of test score? Stem 7 8 9 Leaf 4, 5, 5, 6, 7, 8, 9 0, 1, 4, 4, 5, 6, 7 3, 4, 6, 8, 9 24. Find the mean, median, mode, and range of the following numbers: 7, 8, 6, 9, 9, 8, 10, 6, 9, 8, 9, 7 25. The diagram below shows the contents of a jar of marbles. You select two marbles at random. One marble is drawn and not replaced. Then a second marble is drawn. What is the probability of selecting a green marble and then a blue marble? Page 2 of 4 7th Grade Mathematics CRT Study Guide 3rd Quarter 2007 26. The spinners shown below are divided into 6 equal sections. Each spinner is spun one time. What is the probability that the arrow on the first spinner will land on a space with either the letter S or the letter R, and the arrow on the second spinner will land on a space with an odd number? 27. The spinners shown below are divided into 6 equal sections. Each spinner is spun one time. What is the probability that the arrow on the first spinner will land on a space with either the letter E or the letter R, and the arrow on the second spinner will land on a space with an odd number? 28. The diagram below shows the contents of a jar of marbles. You select two marbles at random. One marble is drawn and not replaced. Then a second marble is drawn. What is the probability of selecting a red marble and then a green marble? Page 3 of 4 7th Grade Mathematics CRT Study Guide 3rd Quarter 2007 Page 4 of 4