根据运算定律,在
里填上运算符号,在
里填上合适的数。
(1)765-146-54=756-(![](https://img.xkw.com/dksih/QBM/2021/12/2/2863928462573568/2866573076111360/STEM/358393560dd844198c583a4f681dae11.png?resizew=18)
![](https://img.xkw.com/dksih/QBM/2021/12/2/2863928462573568/2866573076111360/STEM/dd08feea0c454330bb574cbc92fcb094.png?resizew=18)
)
(2) 25 ×(40+8)=25×![](https://img.xkw.com/dksih/QBM/2021/12/2/2863928462573568/2866573076111360/STEM/358393560dd844198c583a4f681dae11.png?resizew=18)
![](https://img.xkw.com/dksih/QBM/2021/12/2/2863928462573568/2866573076111360/STEM/dd08feea0c454330bb574cbc92fcb094.png?resizew=18)
×8
![](https://img.xkw.com/dksih/QBM/2021/12/2/2863928462573568/2866573076111360/STEM/dd08feea0c454330bb574cbc92fcb094.png?resizew=18)
![](https://img.xkw.com/dksih/QBM/2021/12/2/2863928462573568/2866573076111360/STEM/358393560dd844198c583a4f681dae11.png?resizew=18)
(1)765-146-54=756-(
![](https://img.xkw.com/dksih/QBM/2021/12/2/2863928462573568/2866573076111360/STEM/358393560dd844198c583a4f681dae11.png?resizew=18)
![](https://img.xkw.com/dksih/QBM/2021/12/2/2863928462573568/2866573076111360/STEM/dd08feea0c454330bb574cbc92fcb094.png?resizew=18)
![](https://img.xkw.com/dksih/QBM/2021/12/2/2863928462573568/2866573076111360/STEM/358393560dd844198c583a4f681dae11.png?resizew=18)
(2) 25 ×(40+8)=25×
![](https://img.xkw.com/dksih/QBM/2021/12/2/2863928462573568/2866573076111360/STEM/358393560dd844198c583a4f681dae11.png?resizew=18)
![](https://img.xkw.com/dksih/QBM/2021/12/2/2863928462573568/2866573076111360/STEM/dd08feea0c454330bb574cbc92fcb094.png?resizew=18)
![](https://img.xkw.com/dksih/QBM/2021/12/2/2863928462573568/2866573076111360/STEM/358393560dd844198c583a4f681dae11.png?resizew=18)
更新时间:2021-12-06 22:17:56
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【知识点】 整数乘法分配律
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较易
(0.85)
【推荐1】8×25+25×2=25×(8+2),这是根据( ) 律进行简便计算的。
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