加减乘除在一起先算什么 算术题加减乘除再一起先算什么,为什么?
\u52a0\u51cf\u4e58\u9664\u5728\u4e00\u8d77\u5148\u7b97\u54ea\u4e2a\u52a0\u51cf\u4e58\u9664\u5728\u4e00\u8d77\u5148\u7b97\u4e58\u9664\uff0c\u6700\u540e\u7b97\u52a0\u51cf\u3002\u5982\u679c\u7b97\u5f0f\u4e2d\u6709\u62ec\u53f7\uff0c\u5148\u7b97\u62ec\u53f7\u5185\uff0c\u518d\u7b97\u62ec\u53f7\u5916\u3002
\u4e3e\u4f8b\uff1a
1\u300132-48\u00f76+3\u00d75
=32-8+15
=24+15
=39
2\u3001\uff0860\uff0b140\uff09\u00f75-30
=200\u00f75-30
=40-30
=10
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\u6269\u5c55\u8d44\u6599\uff1a\u56db\u5219\u8fd0\u7b97\u987a\u5e8f\uff1a
1\u3001\u540c\u7ea7\u8fd0\u7b97\u65f6\uff0c\u4ece\u5de6\u5230\u53f3\u4f9d\u6b21\u8ba1\u7b97;
2\u3001\u4e24\u7ea7\u8fd0\u7b97\u65f6\uff0c\u5148\u7b97\u4e58\u9664\uff0c\u540e\u7b97\u52a0\u51cf\u3002
3\u3001\u6709\u62ec\u53f7\u65f6\uff0c\u5148\u7b97\u62ec\u53f7\u91cc\u9762\u7684\uff0c\u518d\u7b97\u62ec\u53f7\u5916\u9762\u7684;
4\u3001\u6709\u591a\u5c42\u62ec\u53f7\u65f6\uff0c\u5148\u7b97\u5c0f\u62ec\u53f7\u91cc\u7684\uff0c\u518d\u7b97\u4e2d\u62ec\u53f7\u91cc\u9762\u7684\uff0c\u518d\u7b97\u5927\u62ec\u53f7\u91cc\u9762\u7684\uff0c\u6700\u540e\u7b97\u62ec\u53f7\u5916\u9762\u7684\u3002
\u7b97\u672f\u9898\u52a0\u51cf\u4e58\u9664\u7efc\u5408\u5728\u4e00\u8d77\uff0c\u8ba1\u7b97\u65b9\u6cd5\u4e3a\uff1a
1\u3001\u5982\u679c\u53ea\u6709\u52a0\u548c\u51cf\u6216\u8005\u53ea\u6709\u4e58\u548c\u9664\uff0c\u4ece\u5de6\u5f80\u53f3\u4f9d\u6b21\u8ba1\u7b97\u3002\u4f8b\u5982\uff1a2+1-1=2\uff0c\u5148\u7b972+1\u7684\u5f97\u6570\uff0c2+1\u7684\u5f97\u6570\u518d\u51cf1\uff1b\u4f8b\u59822*4/1\uff0c\u5148\u7b972*4=8\uff0c\u518d\u75318/1=8\u3002
2\u3001\u5982\u679c\u4e00\u7ea7\u8fd0\u7b97\uff08\u52a0\u6cd5\u548c\u51cf\u6cd5\uff09\u548c\u4e8c\u7ea7\u8fd0\u7b97\u540c\u65f6\u6709\uff0c\u5148\u7b97\u4e8c\u7ea7\u8fd0\u7b97\uff08\u4e58\u6cd5\u548c\u9664\u6cd5\uff09\u3002\u5982\u4e0b\u56fe\uff1a
3\u3001\u5982\u679c\u6709\u62ec\u53f7\uff0c\u8981\u5148\u7b97\u62ec\u53f7\u91cc\u7684\u6570\uff08\u4e0d\u7ba1\u5b83\u662f\u4ec0\u4e48\u7ea7\u7684\uff0c\u90fd\u8981\u5148\u7b97\uff09\u3002
\u56db\u5219\u6df7\u5408\u8fd0\u7b97\uff0c\u8ba1\u7b97\u65b9\u6cd5\u53ea\u8981\u8bb0\u4f4f\u89c4\u5219\u5373\u53ef\uff0c\u6ca1\u6709\u4ec0\u4e48\u7406\u7531\u3002
\u6269\u5c55\u8d44\u6599\uff1a
1\u3001\u56db\u5219\u6df7\u5408\u8fd0\u7b97\u662f\u6307\u4e00\u4e2a\u7b97\u5f0f\u91cc\u540c\u65f6\u6709\u52a0\u51cf\u4e58\u9664\u7684\u7b97\u5f0f\uff0c\u4f46\u662f\u81f3\u5c11\u6709\u4e00\u4e2a\u7ea7\uff08\u6709\u4e24\u79cd\u7b26\u53f7\uff09\u3002
2\u3001\u5982\u679c\u4e00\u7ea7\uff0c\u4e8c\u7ea7\uff0c\u4e09\u7ea7\u8fd0\u7b97\uff08\u5373\u4e58\u65b9\u3001\u5f00\u65b9\u548c\u5bf9\u6570\u8fd0\u7b97\uff09\u540c\u65f6\u6709\uff0c\u5148\u7b97\u4e09\u7ea7\u8fd0\u7b97\u518d\u7b97\u5176\u4ed6\u4e24\u7ea7\u3002
3\u3001\u6709\u591a\u5c42\u62ec\u53f7\u65f6\uff0c\u5148\u7b97\u5c0f\u62ec\u53f7\u91cc\u7684\uff0c\u518d\u7b97\u4e2d\u62ec\u53f7\u91cc\u9762\u7684\uff0c\uff0c\u518d\u7b97\u5927\u62ec\u53f7\u91cc\u9762\u7684\uff0c\u6700\u540e\u7b97\u62ec\u53f7\u5916\u9762\u7684\u3002\u5728\u6df7\u5408\u8fd0\u7b97\u4e2d\uff0c\u5148\u7b97\u62ec\u53f7\u5185\u7684\u6570 \uff0c\u62ec\u53f7\u4ece\u5c0f\u5230\u5927\uff0c\u5982\u6709\u4e58\u65b9\u5148\u7b97\u4e58\u65b9\uff0c\u7136\u540e\u4ece\u9ad8\u7ea7\u5230\u4f4e\u7ea7\u3002
\u53c2\u8003\u8d44\u6599\uff1a\u56db\u5219\u6df7\u5408\u8fd0\u7b97_\u767e\u5ea6\u767e\u79d1
加减乘除在一起先算乘除,最后算加减。如果算式中有括号,先算括号内,再算括号外。
举例:
1、32-48÷6+3×5
=32-8+15
=24+15
=39
2、(60+140)÷5-30
=200÷5-30
=40-30
=10
扩展资料:
四则运算顺序:
1、同级运算时,从左到右依次计算;
2、两级运算时,先算乘除,后算加减。
3、有括号时,先算括号里面的,再算括号外面的;
4、有多层括号时,先算小括号里的,再算中括号里面的,再算大括号里面的,最后算括号外面的。
先算乘除,再算加减,如果加了括号,就先算括号里面的
先乘除,后加减
先乘除后加减
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