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ข้อสอบGED MATHEMATICAL REASONING [Calculator] ชุดที่ 6

ข้อสอบGED MATHEMATICAL REASONING [Calculator] ชุดที่ 6

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#1. What is the geometric meaning of -5 < -2?

All statements are true, but in geometric terms, “<” means “is to the left of.”

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#2. Albert has a bank balance of-65 dollars. George has a balance of -44 dollars. Zoe's balance is -7 dollars; Pat's balance is -82 dollars. Who owes more money to the bank?

They all have a debt equal to the absolute value of their balance.

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#3. What is the greatest common factor of 42 and 36?

factors of 42: 1, 2,3, 6, 7, 14, 21, 42

factors of 36: 1, 2, 3, 4, 6 , 9, 12, 18, 36

common factors: 1,2,3,6

largest of these: 6

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#4. What is the least common multiple of 6 and 9?

multiples of 6: 6, 12, 18 24, 30, 36, 42,48, . . .

multiples of 9:9, 18, 27, 36, 45,

common multiples: 18, 36,

smallest of these: 18

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#5. Which situation describes quantities combining to make 0?

from the friend’s point of view,-85 5(17) = -85 85 = 0

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#6. On a number line, where is the number -2 + (-7)?

Adding a negative is a move to the left on the number line.

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#7. Which number line shows that a number and its opposite have a sum of 0?

Number opposite starts at zero, goes to the number, and then returns.

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#8. Compute 3 - 7.

3-7=3 (-7)=-4

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#9. Compute 5 - (-6).

5-(-6)=5 6=11

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#10. Add 7 + (-5) + (-9).

7 (-5) (-9)=2 (-9)=-7

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#11. Compute -3 - (-8) + (-4) - 5.

-3-(-8) (-4)-5=-3 8 (-4) (-5) = 5 (-4) (-5)= 1 (-5)=-4

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#12. Add -9 + 3 + (-4).

-9 3 (-4)=-6 (-4)=-10

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#13. Compute -8- (-10)- 5.

-8-(-10)-5=-8 10 (-5)= 2 (-5)=-3

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#14. Multiply-7(-9).

The product of two numbers with identical signs is positive.

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#15. Multiply 2(-4)(-1).

2(-4)(-1)= (-8)(-1)=8

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