一些简单的数学六年级填空题,请高人帮忙解答,谢谢

2024-12-01 10:07:46
推荐回答(3个)
回答1:

1.完成一件工程,甲单独做要6天,乙单独做要8天,乙与甲工作时间的比是(4:3 ),甲与乙的工作效率的比是(4:3 )。
2.把1/4时:25分化成最简单的整数比是(3:5 ),比值是( 3/5 )
3.两根铁丝的长分别是9分米、12分米,各围成一个最大的圆(接头处忽略不计)。大圆与小圆半径的最简整数比是(4:3 ),大圆与小圆面积的比是( 16:9 )
4.在一个比例中,两个内项都是2/3,其中一个外项是最小的质数,另一个外项是(2/3 )
5.一个三角形的三个内角的度数比是1:2:1.最大的一个角是(90°),按角分,这是一个( 直角 )三角形。
6.正方形的周长与它的边长成( 正)比例;圆的面积与它的半径成( 正 )比例。(正比例、反比例、或不成比例)
7.将长40cm、宽30cm的图纸,按1:5缩小(放大),得到的新图纸的面积是( 30000 )cm²。
8.从24的因数中选出四个数组成的比例是(3:4=6:8 )

回答2:

1,4:3 4:3
2,3:5 3/5
3, 4:3 9:16
4, 4/9
5, 90 直角
6,正比例 不成比例
7,48
8,2:4=12:24

回答3:

(1)4:3 4:3 (2)3:5 0.6 (3)4:3 16:9 (4)4/9 (5)90 直角 (6)正 正 (7)30 (8)2:4=6:12

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