P4正方形面積
Quiz
•
Mathematics
•
4th Grade
•
Practice Problem
•
Hard
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8 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
圖中圖形的面積是?
48m2
54m2
30m2
42m2
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
一個圖形由四個大小相同的正方形和一個長方形組成,正方形的周界是84 cm。以下哪一道算式可以計出上圖的面積?
(84 ÷ 4) × (84 ÷ 4)
84 ÷ 4 × 10
(84 ÷ 4) × (84 ÷ 4) × 6
(84 ÷ 4) × 2 + (84 ÷ 4) × 3
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
一個正方形的周界是44厘米,它的面積是多少?
11平方厘米
44平方厘米
88平方厘米
121平方厘米
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
一個正方形的邊長是8 m,如果邊長減少3 m,面積減少了多少m2?
64m2
25m2
39m2
55m2
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
在圖中畫上兩條虛線,得出長方形P和正方形Q。Q的邊長是18 cm,P的長與Q的邊長相等,P的闊是Q的邊長的一半,圖形的面積是多少?
126 cm2
162 cm2
972 cm2
1944 cm2
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
有三張大小相同的卡紙,每張卡紙長16 cm,闊7 cm,現把它們重疊放置如上圖所示,重疊後的圖形面積是多少?以下哪一道算式可以計出上圖的面積?
(16 × 7 × 3)
(16 × 7 × 3) – (7 × 7)
(16 × 7 × 3) – (7 × 7 × 2)
(16 × 7 × 3) – (16 – 7 ) × 7
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
家明有兩條長度相等的繩子,他用其中一條圍出一個長10cm,闊8cm的長方形,另一條則圍出一個正方形。這個正方形的面積是多少?
36cm2
80cm2
81cm2
120cm2
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