数学问题

Question

一块1.2m的木板重1.8kg ,伟民锯掉0.25m剩下多少kg？

老师教的方法我不明白那位大神可以教教

                  1.2m=1.8kg

（1.2m-0.25m）=1.8kg×0.95m/1.2m

                          =1.425kg

Comments

等下下

Answer 1

1.2.÷1.8

= 0.66

1.2-0.25

= 0.95

0.95 ÷ 0.66

= 1.425

谢谢

Comments

哦明白了谢谢

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有点类似比例算法

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对对对
明白就好
不客气

Answer 2

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谢谢～( *ˊᵕˋ)✩︎‧₊

Answer 3

答案是1.425kg

Answer 4

1.2m:1.8kg = (1.2m-0.25m): n kg

1.2m:1.8kg = 0.95m : n kg

1.8÷1.2 = 1.5

1.5×0.95= 1.425

Nkg = 1.425

概念就好像分数中，分母乘2那么分子也要跟着乘2

Answer 5

恭喜你对了

谢谢～