Twenty Questions Subject CRCT Review Twenty Questions 1
Twenty Questions Subject: CRCT Review
Twenty Questions 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
1. Find the mean, median, mode and range of the set of data: 1, 5, 3, 2, 1, 4 l l Mean: 2. 66 Median: 2. 5 Mode: 1 Range: 4
2. The hourly wages for 6 workers are: $5, $12, $9, $10, $6, $5. What is the range? l $7
3. Simplify: 9 k + 42 + 2 k – 18 – k -3 l 10 k +21
4. Simplify: 7(8 + 5 k) A. 54 + 75 k B. 7(40 k) C. 56 + 35 k D. 20 k l C: 56 + 35 k
5. Evaluate the expression if r = 4 and t = 8 5 + 6 r + 5 t l 69
6. Simplify: | - 8 + 4 | + | 5 | – |-3| l 6
7. Simplify: 6( 4 c – 7 ) + 2( -3 c +8 ) l 18 c – 26
8. During the summer, Mrs. Duncan teaches at a computer camp for grades K 12. The ages of the students during one session are summarized in this box & whisker plot: What is the median? l Median = 10
9. Which relationship is suggested by the scatter plot below? A. The graph represents a negative correlation. B. The longer the student studied, the higher the test score. C. The longer the student studied, the lower the test score. D. Students who did not study received a high test score. l Answer: B
10. What type of transformation does the diagram represent? l Rotation
11. If two lines lie in the same plane and never intersect, what type of lines are they? A. Intersecting B. Perpendicular C. Parallel D. Bisecting l C. Parallel
12. Find the value of x if 25 in. 12 in. 25 in. 15 in. x l X = 20 inches
13. A picture of a house is placed on a coordinate plane. It undergoes a 50% dilation with respect to the origin. One point of the house originally had coordinates of (6, 7). What are the coordinates of the dilated image of this point? l (3, 3. 5)
14. Given coordinates (1, 3), (-2, 6), and (4, 5), what would be the new coordinates with a scale factor of 2? l (2, 6), (-4, 12), (8, 10)
15. If y=3 and x=12, what is the value of y when x varies inversely and is equal to 10? l y = 3. 6
16. The following 4 coordinates are connected points on a coordinate plane: (1, 2), (2, 3), (3, 4), (5, 6). Which of the following answers best represents the connected points? a. inverse proportion b. direct proportion c. neither a direct nor inverse proportion d. both a direct and inverse proportion l C. neither a direct nor inverse proportion
17. Solve: l -8
18. Evaluate the expression z – xy if x = ½ , y = 4 and z = -2. 3 l -4. 3
19. If x = 3 and y = 12 and x and y vary directly, write the equation. l y = 4 x
20. Find three consecutive integers whose sum is 21. l 6, 7, 8
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