# 寒假作業的幾個題目 .. (含英文與數學)

1. Sam is 12 years old and Tom is 7 years old. When the sum of their ages is 45,how old will Tom be ? (A) 15 (B) 19 (C) 20 (D) 25 (E) 27

2. What is the value of 101 - 2 +1 + 102? (A)0 (B)100 (C)198 (D)200 (E)202

3.Which of the following numbers has a value between 1/5 and 1/4 ?

4.The area, in square metres, of the rectangle below is (A)9 (B)10 (C)12 (D)14 (E)16

5. Which of the following is closest to 1000 seconds? (A)1 four (B)1 day (C)45 minutes (D)30 minutes (E)15 minutes

6. Five teams play each other once in a basketball competition. How many games were played in total? (A)10 (B)12 (C)14 (D)20 (E) 28

Update:

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1. Sam is 12 years old and Tom is 7 years old. When the sum of their ages is 45,how old will Tom be ? (A) 15 (B) 19 (C) 20 (D) 25 (E) 27

翻譯: Sam十二歲, Tom七歲, 當他們的年齡總和是45歲時, 請問Tom幾歲?

sol:

首先你知道12+7=19 (目前今年總歲數和)

45是N年後他們的歲數和, 那就用45-19=26

記得兩人都會變老,所以26/2=13 (表示每人都增加13歲,表示過了13年)

Tom原本七歲 + 十三歲 = 二十歲

Ans--> He will be 20 years old then.

2. What is the value of 101 - 2 +1 + 102? (A)0 (B)100 (C)198 (D)200 (E)202

翻譯:101-2+1+102的值是多少?

sol:

原式=> 101+1+102-2 = 202

Ans --> (E)202

3.Which of the following numbers has a value between 1/5 and 1/4 ?

翻譯: 下列哪些值的範圍介於 五分之一 和 四分之一 之間?

sol:

這應該有選項

不過通分之後比較, (五分之一)=(二十分之四);;;; (四分之一)=(二十分之五)

所以答案應該在 4/20 ~ 5/20

4.The area, in square metres, of the rectangle below is (A)9 (B)10 (C)12 (D)14 (E)16

翻譯: 以下矩形的面積是多少平方公尺?

有一個長方形 長7m 寬2m --> 7x2=14 平方公尺(m2)

5. Which of the following is closest to 1000 seconds? (A)1 hour (B)1 day (C)45 minutes (D)30 minutes (E)15 minutes

翻譯: 下列何者最接近1000秒?

sol:

1 hour = 60 mins = 3600 sec.

1 day = 86400 sec

45 mins = 2700 sec

30 mins = 1800 sec

15 mins = 900 sec

And --> (E)15 minutes

6. Five teams play each other once in a basketball competition. How many games were played in total? (A)10 (B)12 (C)14 (D)20 (E) 28

翻譯:五個隊伍進行比賽,每隊都要對到,至少要進行幾場比賽?

sol:

依序拿一隊來比

A,B,C,D,E (五隊)

A 可以對4 (BCDE)

B 可以對3 (CDE)

C 可以對2 (DE)

D 可以對1 (E)

E 不用對 因為前面都比過

所以 4+3+2+1=10

Ans --> (A)10

Source(s): myself
• (1)In 13 years time,Tom will be 20 years old.C=20.

(2)E=202

(3)Between 1/5 and 1/4 is 9/40; Or=0.225

(4)(7x2)m^2=D14

(5)1000 sec.=16 min. ==E15

(6)(5x4x3x2)/2x3=60//3=20=D