ข้อสอบGED MATHEMATICAL REASONING [Calculator] ชุดที่ 5
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#1. What is the opposite of -5, simplified?
-(-5) = 5
#2. What is the simplified form of the opposite of the opposite of 12?
The opposite of the opposite of a number is the same number.
#3. What is l-42l, simplified?
The vertical bars indicate absolute value.
#4. What is the absolute value of 7?
Absolute value is the distance from 0,which is always positive.
#5. Which quadrant has positive x values and negative y values?
Positive x values are to the right; negative y values are below the x-axis.
#6. Which quadrant has negative x values and negative y values?
Quadrants are named counter-clockwise,starting in the upper right. Quadrant Ill is to the left of the y-axis and below the x-axis.
#7. Which point is the reflection of (-4, 7) in the x-axis?
Reflections in the x-axis change the sign of the y value.
#8. Which point is the reflection of (0, -2) in the x-axis?
Reflections in the x-axis change the sign of the y value.
#9. Which point is the reflection of (2, -5) in the y-axis?
Reflections in the y-axis change the sign of the x value.
#10. Which point is the reflection of (0, -3) in the y-axis?
Changing the sign of O does not affect its value.
#11. In the diagram, which point has coordinates (-3, 2)?
(-3, 2):3 units left and 2 units up
#12. In the diagram, which point has coordinates (4, -5)?
(4, -5):4 units right, 5 units down
#13. Which statement is true?
-3 is a larger number than -7 and so is to its right.
#14. Death Valley in California has an elevation of -282 feet. The Dead Sea in the Middle East has an elevation of-1360 feet. Which of the following must be true?
Death Valley is not as far below sea level as the Dead Sea is.
#15. The absolute value expression l-7I represents
The absolute value of a number is the distance of the number from 0.