미국중학생들 1-2학년 수학문제

1. Roberta left for her dancing class at 3:45 p.m. Her dancing school is a 15 minute walk from her house, and her class lasted one and one half hours. What time did she get home if she went straight home?

① 5:15 p.m.

② 5:30 p.m.

③ 5:45 p.m.    

④ 6:15 p.m.

2. Glenn needs 1,500 boards to build a small rocket. Each board must be 3 feet long. If boards are sold in 12 foot lengths, how many boards must Glenn buy and cut into 3 foot pieces to get the 1,500 he needs?

**NOTE : Please ignore the kerf (the width of the cut a saw makes, often about an eighth of an inch)

① 42

② 125

③ 375     

3. What is 1 1/2 divided by 1/2?

① 5

② 2

③ 3     

④ 4

4. What is 12.8 divided by 0.04?

① 32

② 320     

③ 3.2

④ 0.32

5. Which statement is correct?

① 27% < 1/4 (Twenty seven percent is less than one fourth)

② 12% = 1/8 (Twelve percent is equal to one eighth)

③ 3 3/5 = 335% (Three and three fifths is equal to three hundred thirty five percent)

④ 2/3 > 66% (Two thirds is greater than sixty six percent)     

6. Solve for n.

3/n = 7/12

  (                                          )

7. If the scale on a road map is 1 inch = 250 miles, how many inches would represent 1250 miles?

① 2

② 5     

③ 7.5

④ 15  

8. Round 12.5861 to the nearest hundredth.

① 12.586

② 12.59     

③ 12.60

④ 13.00

9. Erv ran the 110 meter high hurdles in 13.27 seconds. His teammate, Willie ran the same race in 12.91 seconds. Rounded to the nearest tenth of a second, how much faster was Willie's time?

① 0.3 seconds

② 0.36 seconds

③ 0.4 seconds     

④ 1.0 seconds

미국은 안갔다왔지만 이런걸 어떻게 아냐고요? 내가 만들었소. ㅋㅋㅋ

문제 답.;; 어찌 알겠습니까?ㅋ

답 나왔습니다.