SAT考試數(shù)學(xué)練習(xí)題及答案解析（五）

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SAT考試數(shù)學(xué)練習(xí)題SAT Math Practice 5

1. The distance from town A to town B is five miles. C is six miles from B. Which of the following could be the distance from A to C?

I 11

II 1

III 7

A. I only

B. II only

C. I and II only

D. II and III only

E. I, II, or III.

2. √5 percent of 5√5 =

A. 0.05

B. 0.25

C. 0.5

D. 2.5

E. 25

3. If pqr = 1 , rst = 0 , and spr = 0, which of the following must be zero?

A. P

B. Q

C. R

D. S

E. T

4.

A. 1/5

B. 6/5

C. 63

D. 64 / 5

E. 64

5. -20 , -16 , -12 , -8 …

In the sequence above, each term after the first is 4 greater than the preceding term. Which of the following could not be a term in the sequence?

A. 0

B. 200

C. 440

D. 668

E. 762

答案見下頁

SAT考試數(shù)學(xué)練習(xí)題SAT Math Practice 5參考答案

☆1.Correct Answer: E

Explanation:

Do not assume that AB and C are on a straight line. Make a diagram with A and B marked 5 miles apart. Draw a circle centered on B, with radius 6. C could be anywhere on this circle. The minimum distance will be 1, and maximum 11, but anywhere in between is possible.

☆2.Correct Answer: B

Explanation:

We can write the statement mathematically, using x to mean ‘of’ and /100 for ‘per cent’。 So （ √5/100） x 5√5 = 5 x 5 /100 = 0.25

☆3.Correct Answer: D

Explanation:

If pqr = 1, none of these variable can be zero. Since spr = 0 , and since p and r are not zero, s must be zero. （Note that although rst = 0, and so either s or t must be zero, this is not sufficient to state which must be zero）

☆4.Correct Answer: E

Explanation:

65 = 64x 6

（64 x 6） - 64 = 64（6 - 1） = 64 x 5

Now, dividing by 5 will give us 64

☆5.Correct Answer: E

Explanation:

All terms in the sequence will be multiples of 4.

762 is not a multiple of 4