2019新SAT数学练习题及答案解析1

>>SAT考试模拟题：2019新SAT数学练习题及答案解析1

>>SAT考试经典课程推荐

1. Of the following, which is greater than ½ ?

A. 2/5

B. 4/7

C. 4/9

D. 5/11

E. 6/13

2. If an object travels at five feet per second, how many feet does it travel in one hour?

A. 30

B. 300

C. 720

D. 1800

E. 18000

1.Correct Answer: B

Explanation:

One way to deal with fractions is to convert them all to decimals. (Using your calculator, divide the numerator by the denominator).

In this case all you would need to do is to see which is greater than 0.5.

Otherwise to see which is greater than ?, double the numerator and see if the result is greater than the denominator. In B, the correct answer, doubling the numerator gives us 8, which is bigger than 7.

2.Correct Answer: E

Explanation:

If an object travels at 5 feet per second it covers 5x60 feet in one minute, and 5x60x60 feet in one hour. Answer = 18000 (E)

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