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年齡問題

Authored by 翁昆漢 翁昆漢

Mathematics

6th Grade

Used 3+ times

年齡問題
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12 questions

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1.

FILL IN THE BLANKS QUESTION

2 mins • 1 pt

爺爺比姑姑大 30 歲,當姑姑 10 歲時,爺爺是幾歲?

(a)  

2.

FILL IN THE BLANKS QUESTION

2 mins • 1 pt

小儒和嬸嬸相差 30 歲,當嬸嬸的年齡是小儒的 3 倍時,小儒A歲和嬸嬸B歲。

(a)  

Answer explanation

小儒:30÷(3-1)=15

嬸嬸:15×3=45

答:小儒 15 歲;嬸嬸 45 歲

3.

FILL IN THE BLANKS QUESTION

2 mins • 1 pt

叔叔今年 33 歲,小騰今年 15 歲,幾年前,叔叔的年齡是小騰的 4 倍?

(a)  

Answer explanation

1.33-15=18

18÷(4-1)=6

15-6=9

6×4=24

4.

FILL IN THE BLANKS QUESTION

2 mins • 1 pt

爸爸 30 歲時,小琪 2 歲,過了幾年,爸爸的年齡才剛好是小琪的 3 倍

(a)  

Answer explanation

30-2=28

28÷(3-1)=14

14×3=42

5.

FILL IN THE BLANKS QUESTION

2 mins • 1 pt

奶奶今年 68 歲,哥哥今年 20 歲。

幾年前,奶奶的年齡是哥哥的 4 倍?

(a)  

Answer explanation

1. 68-20=48

48÷(4-1)=16

20-16=4

答:4 年前

6.

FILL IN THE BLANKS QUESTION

2 mins • 1 pt

奶奶今年 68 歲,哥哥今年 20 歲。

幾年後,奶奶的年齡是哥哥的 3 倍?

(a)  

Answer explanation

48÷(3-1)=24

24-20=4

答:4 年後

7.

FILL IN THE BLANKS QUESTION

2 mins • 1 pt

爺爺今年 51 歲,爸爸今年 30 歲,弟弟今年 6 幾年前,爺爺的年齡是爸爸的 8 倍?

(a)  

Answer explanation

1. 51-30=21

21÷(8-1)=3

30-3=27

答:27 年前

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