数学简单的算术题
\u5e2e\u5fd9\u56de\u7b54\u4e00\u4e0b\u8d85\u7b80\u5355\u7684\u6570\u5b66\u7b97\u672f\u9898\u3002-10p²g
10x²
-pmn
9/5
13+4m
m+n-m+n=(m-m)+(n+n)=2n
7\u5206\u4e4b4\u4e58\u4ee53\u5206\u4e4b1=4/21
7\u5206\u4e4b4\u52a03\u5206\u4e4b1=19/21
=10-4-3-5
=-2
6－【－6－（－3）＋4】
=6-【-6+3+4】
=6-1
=5
8－【－11－（－4）＋8】
=8-【－11+4+8】
=8-1
=7
【－8＋（－3）】² ＋【－14＋（－6）】
=-11²--20
=-121-20
=-141
【－15＋（－4）】² ＋【－19＋（－3）】
=-19²-22
=-383
1. =10-4-3-5
=-2
2. =6-【-6+3-4】
=13
3。 =8-【-11+4+8】
=7
4. =（-11）² -20
=101
5. =（-19）² -22
=339
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绛旓細2閬鏁板璁＄畻棰橈紝寰绠鍗 (-1鍙2鍒嗕箣1锛壝楋紙-2鍙3鍒嗕箣2锛壝楋紙+3鍙4鍒嗕箣3锛壝5鍒嗕箣2脳锛-15鍒嗕箣4锛壝楋紙-8鍒嗕箣3锛 =[(-2鍒嗕箣3锛壝5鍒嗕箣2]脳[锛-3鍒嗕箣8)脳锛-8鍒嗕箣3锛塢脳[锛+4鍒嗕箣15)脳锛-15鍒嗕箣4)] =锛-5鍒嗕箣3锛壝1脳锛-1锛 锛5鍒嗕箣3 21-49.5+10.2-...
绛旓細1銆佸師璁″垝姣忓ぉ淇45脳锛20-5锛壝5=135绫 2銆佽鐢蹭箼涓ゅ湴鐩歌窛X绫 X/60-X/100=8 5X-3X=2400 2X=2400 X=1200绫 绛旓細鐢蹭箼涓ゅ湴鐩歌窛1200绫 3銆佺洰鍓嶆讳汉鏁版槸84+56+60=200 瑁佸壀姣斾緥灏辨槸150/200=3/4 C閮ㄩ棬鐣欎笅鐨勫氨鏄60*3/4=45浜
