六年级奥数题及答案 六年级奥数题及答案
\u516d\u5e74\u7ea7\u5965\u6570\u9898\u53ca\u7b54\u68481.\u7532\u4e59\u4e24\u4eba\u5206\u522b\u52a0\u5de5\u540c\u6837\u591a\u7684\u96f6\u4ef6,\u5f53\u7532\u505a\u4e861/4\u65f6,\u4e59\u8fd8\u670945\u4e2a\u6ca1\u505a.\u8fd9\u65f6\u7532\u5de5\u6548\u63d0\u9ad8\u4e8620%,\u5f53\u7532\u505a\u4e86\u4f59\u4e0b\u76842/3\u65f6,\u4e59\u8fd8\u6709\u4ed6\u539f\u5de5\u4f5c\u91cf\u76841/3\u6ca1.\u6c42\u4e24\u4eba\u5de5\u4f5c\u603b\u91cf\u662f\u591a\u5c11?
\uff081-1/4\uff09\u00d72/3=1/2 1-1/2=0.5
2.52\uff1a70=26\uff1a35\uff0c\u628a\u5168\u7a0b\u8bbe\u4e3a\uff0826+35\uff09x\u537361x.
\u5219\uff0826x-52*4\uff09/52=35x/90\uff0c\u89e3\u5f97x=36
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2\u4eba\u76f8\u9047\u540e\u7ee7\u7eed\u884c\u8fdb\u7532\u5230B\u5730\uff0c\u4e59\u5230A\u5730\u540e\u7acb\u523b\u6389\u5934\u3002
\u8bbe\u7532\u4eceA\u5230B\u5730\u7528\u4e86s(\u65f6\u95f4)\uff0c\u90a3\u4e48\u4e59\u4eceB\u5230A\u5730s*3/2(\u65f6\u95f4\uff09
\u8fd9\u65f6\uff0c\u7532\u8d70\u4e86x*3/2\uff0c\u5269\u4e0b\u4e860.5x\u8981\u4e59\u548c\u7532\u8d70\u5b8c. \u90a3\u4e48\u7b2c\u4e8c\u6b21\u76f8\u9047\u4e59\u8d70\u4e860.5x/\uff085/3\uff09\uff1dx*3/10
x*3/5-x*3/10\uff1dx*3/10\uff1d20
x\uff1d200/3\uff08km\uff09196\u7c73
1.\u7532\u4e59\u4e24\u4eba\u5206\u522b\u52a0\u5de5\u540c\u6837\u591a\u7684\u96f6\u4ef6,\u5f53\u7532\u505a\u4e861/4\u65f6,\u4e59\u8fd8\u670945\u4e2a\u6ca1\u505a.\u8fd9\u65f6\u7532\u5de5\u6548\u63d0\u9ad8\u4e8620%,\u5f53\u7532\u505a\u4e86\u4f59\u4e0b\u76842/3\u65f6,\u4e59\u8fd8\u6709\u4ed6\u539f\u5de5\u4f5c\u91cf\u76841/3\u6ca1.\u6c42\u4e24\u4eba\u5de5\u4f5c\u603b\u91cf\u662f\u591a\u5c11?
2.\u52a0\u4ee5\u540c\u65f6\u4ece\u5bb6\u51fa\u53d1\u76f8\u5411\u800c\u884c.\u7532\u6bcf\u5206\u949f\u8d7052\u7c73,\u4e59\u6bcf\u5206\u949f\u8d7070\u7c73.\u4e24\u4eba\u5728\u4e2d\u9014A\u76f8\u9047.\u82e5\u7532\u63d0\u524d4\u5206\u949f\u51fa\u53d1,\u901f\u5ea6\u4e0d\u53d8,\u4ee5\u6bcf\u5206\u949f\u8d7090\u7c73,\u5219\u4e24\u4eba\u8fd8\u5728A\u5730\u76f8\u9047.\u6c42\u4e24\u4eba\u5c06\u76f8\u8ddd\u591a\u8fdc.
3.\u7532\u4e59\u4e24\u4eba\u5206\u522b\u4eceA\uff0cB\u4e24\u5730\u540c\u65f6\u76f8\u5411\u800c\u884c\uff0c\u4e59\u901f\u4e3a\u7532\u76842/3.2\u4eba\u76f8\u9047\u540e\u7ee7\u7eed\u884c\u8fdb\u7532\u5230B\u5730\uff0c\u4e59\u5230A\u5730\u540e\u7acb\u523b\u6389\u5934\u3002\u5df2\u77e5\u4e8c\u4eba\u7b2c2\u6b21\u76f8\u9047\u70b9\u8ddd\u7b2c\u4e00\u6b2120\u5343\u7c73\uff0c\u90a3\u4e48AB\u4e24\u5730\u76f8\u8ddd\u591a\u5c11\u3002
1\u3001\u67d0\u5546\u5e97\u65b0\u5230\u4e00\u6279\u6536\u97f3\u673a\uff0c\u7b2c\u4e00\u5929\u5356\u51fa42\u53f0\uff0c\u7b2c\u4e8c\u5929\u5356\u51fa\u603b\u6570\u7684 \uff0c\u4e24\u5929\u5171\u5356\u603b\u6570\u768475%\uff0c\u8fd9\u6279\u6536\u97f3\u673a\u5171\u591a\u5c11\u53f0\uff1f
2\u3001\u4fee\u4e00\u6761\u6c34\u6e20\uff0c\u7b2c\u4e00\u5929\u4fee\u4e86\u5168\u957f\u768437.5%\uff0c\u7b2c\u4e8c\u5929\u4fee\u4e86\u4f59\u4e0b \u7684 \uff0c\u7b2c\u4e8c\u5929\u6bd4\u7b2c\u4e00\u5929\u591a\u4fee50\u7c73\uff0c\u8fd9\u6761\u6c34\u6e20\u957f\u591a\u5c11\u7c73\uff1f
3\u3001\u4e00\u6876\u6cb9\u7b2c\u4e00\u6b21\u7528\u53bb\u603b\u6570\u768437.5%\uff0c\u7b2c\u4e8c\u6b21\u7528\u53bb\u7684\u662f\u7b2c\u4e00\u6b21\u7684 \uff0c\u7b2c\u4e00\u6b21\u7528\u53bb\u7684\u6bd4\u7b2c\u4e8c\u6b21\u591a\u7528\u53bb21\u5343\u514b\uff0c\u4e24\u6b21\u5171\u7528\u53bb\u591a\u5c11\u5343\u514b\uff1f
4\u3001\u67d0\u673a\u68b0\u5382\u4eca\u5e74\u7b2c\u4e00\u5b63\u5ea6\u751f\u4ea7\u673a\u5668\u82e5\u5e72\u53f0\uff0c\u5df2\u77e5\u4e00\u6708\u4efd\u751f\u4ea7240\u53f0\uff0c\u4e8c\u6708\u4efd\u751f\u4ea7\u4e86\u4f59\u4e0b\u7684 \uff0c\u4e09\u6708\u4efd\u751f\u4ea7\u603b\u6570\u768430%\uff0c\u4eca\u5e74\u7b2c\u4e00\u5b63\u5ea6\u751f\u4ea7\u591a\u5c11\u53f0\uff1f
5\u3001\u7532\u770b\u4e00\u672c\u4e66\uff0c\u7b2c\u4e00\u5929\u770b\u4e86\u5168\u4e66\u7684 \uff0c\u7b2c\u4e8c\u5929\u6bd4\u7b2c\u4e00\u5929\u591a\u770b20%\uff0c\u7b2c\u4e09\u5929\u770b\u4f59\u4e0b\u768416\u9875\uff0c\u8fd9\u672c\u4e66\u5171\u6709\u591a\u5c11\u9875\uff1f
6\u3001\u4fee\u4e00\u6bb5\u8def\uff0c\u7b2c\u4e00\u5929\u4fee\u4e86\u5168\u957f\u768420%\u591a60\u7c73\uff0c\u7b2c\u4e8c\u5929\u4fee\u4e86\u5168\u957f\u768425%\u5c1140\u7c73\uff0c\u8fd8\u5269310\u7c73\uff0c\u8fd9\u6bb5\u8def\u5168\u957f\u591a\u5c11\u7c73\uff1f
7\u3001\u4e00\u5806\u9ec4\u6c99\uff0c\u5df2\u7ecf\u7528\u53bb\u7684\u6bd4\u8fd9\u5806\u9ec4\u6c99\u7684 \u591a5\u5428\uff0c\u6ca1\u6709\u7528\u53bb\u7684\u6bd4\u8fd9\u5806\u9ec4\u6c99\u7684 \u5c1125\u5428\uff0c\u8fd9\u5806\u9ec4\u6c99\u5171\u6709\u591a\u5c11\u5428\uff1f
8\u3001\u4e00\u6876\u6cb9\uff0c\u7b2c\u4e00\u6b21\u53d6\u51fa\u5168\u90e8\u768420%\uff0c\u7b2c\u4e8c\u6b21\u6bd4\u7b2c\u4e00\u6b21\u591a\u53d6\u51fa5\u5343\u514b\uff0c\u8fd9\u65f6\u6876\u91cc\u8fd8\u52697\u5343\u514b\uff0c\u7b2c\u4e8c\u6b21\u53d6\u51fa\u591a\u5c11\u5343\u514b\uff1f
9\u3001\u6709\u4e00\u6c60\u6c34\uff0c\u7b2c\u4e00\u5929\u653e\u51fa60\u5428\uff0c\u7b2c\u4e8c\u5929\u653e\u51fa65\u5428\uff0c\u5269\u4e0b\u7684\u6c34\u6bd4\u539f\u6765\u8fd9\u6c60\u6c34\u768425%\u5c115\u5428\uff0c\u539f\u6765\u6c34\u6c60\u6709\u6c34\u591a\u5c11\u5428\uff1f
10\u3001\u4e00\u8f86\u5ba2\u8f66\u548c\u4e00\u8f86\u8d27\u8f66\u4ece\u7532\u4e59\u4e24\u5730\u6cbf\u540c\u4e00\u6761\u8def\u76f8\u5bf9\u5f00\u51fa\uff0c\u5f53\u8d27\u8f66\u884c\u4e86\u5168\u7a0b\u768480%\uff0c\u5ba2\u8f66\u884c\u4e86\u5168\u7a0b\u7684 \uff0c\u4e24\u8f66\u76f8\u8ddd18\u5343\u7c73\uff0c\u7532\u4e59\u4e24\u5730\u76f8\u8ddd\u591a\u5c11\u5343\u7c73\uff1f
11\u3001\u4fee\u4e00\u6761\u8def\uff0c\u7b2c\u4e00\u6b21\u4fee\u4e8625\u5343\u7c73\uff0c\u6bd4\u7b2c\u4e8c\u6b21\u591a\u4fee5\u5343\u7c73\uff0c\u5df2\u4fee\u7684\u6bd4\u8fd9\u6bb5\u8def\u7684 \u591a5\u5343\u7c73\u3002\u8fd9\u6bb5\u8def\u957f\u591a\u5c11\u5343\u7c73\uff1f
12\u3001\u7532\u8bfb\u4e00\u672c\u4e66\uff0c\u7b2c\u4e00\u5929\u8bfb\u4e86\u5168\u4e66\u603b\u9875\u6570\u768420%\uff0c\u7b2c\u4e8c\u5929\u6bd4\u7b2c\u4e00\u5929\u5c11\u8bfb\u4e8615\u9875\uff0c\u4e24\u5929\u6b63\u597d\u8bfb\u4e86\u5168\u4e66\u603b\u9875\u7684 \u3002\u4e24\u5929\u4e00\u5171\u8bfb\u4e86\u591a\u5c11\u9875\uff1f
13\u3001\u56db\u5e74\u7ea7\u4e00\u73ed\u5973\u751f\u4eba\u6570\u6bd4\u7537\u751f\u591a25%\uff0c\u7537\u751f\u4eba\u6570\u6bd4\u5973\u751f\u5c115\u4eba\u3002\u8fd9\u4e2a\u73ed\u5171\u6709\u5b66\u751f\u591a\u5c11\u4eba\uff1f
14\u3001\u4e00\u6279\u8d27\u7269\u4e09\u5929\u8fd0\u5b8c\uff0c\u7b2c\u4e00\u5929\u8fd0\u8d70\u4e86\u8fd9\u6279\u8d27\u7269\u768440%\uff0c\u7b2c\u4e8c\u5929\u6bd4\u7b2c\u4e00\u5929\u5c11\u8fd030\u5428\uff0c\u7b2c\u4e09\u5929\u8fd0\u4e86120\u5428\u3002\u8fd9\u6279\u8d27\u7269\u6709\u591a\u5c11\u5428\uff1f
15\u3001\u4e24\u4e2a\u6570\u7684\u548c\u662f89\uff0c\u7532\u6570\u6bd4\u4e59\u7684 \u591a1\uff0c\u6c42\u8fd9\u4e24\u4e2a\u6570\uff1f
16\u3001\u5b66\u6821\u8bad\u7ec3\u961f\u5171\u670954\u4eba\uff0c\u7537\u751f\u7684\u4eba\u6570\u6bd4\u5973\u751f\u7684 \u5c116\u4eba\uff0c\u8fd9\u961f\u7537\u3001\u5973\u751f\u5404\u591a\u5c11\u4eba\uff1f
17\u3001\u67d0\u8f66\u95f4\u7532\u3001\u4e59\u4e24\u4e2a\u5de5\u4eba\u5171\u505a\u96f6\u4ef6180\u4e2a\uff0c\u5df2\u77e5\u7532\u6bd4\u4e59\u591a\u505a40%\uff0c\u90a3\u4e48\u7532\u3001\u4e59\u4e24\u4e2a\u5de5\u4eba\u5404\u505a\u96f6\u4ef6\u591a\u5c11\u4e2a\uff1f
18\u3001\u4e24\u4e2a\u8f66\u95f4\u4e00\u5929\u5171\u751f\u4ea7637\u96f6\u4ef6\uff0c\u5176\u4e2d\u7532\u8f66\u95f4\u6bd4\u4e59\u8f66\u95f4\u5c1125%\u3002\u4e24\u4e2a\u8f66\u95f4\u5404\u751f\u4ea7\u591a\u5c11\u4e2a\u96f6\u4ef6\uff1f
19\u3001\u7532\u3001\u4e59\u3001\u4e19\u4e09\u4e2a\u6570\u7684\u548c\u662f1200\uff0c\u7532\u662f\u4e59\u768460%\uff0c\u4e19\u662f\u4e59\u768480%\uff0c\u7532\u3001\u4e59\u3001\u4e19\u5404\u662f\u591a\u5c11\uff1f
20\u3001\u7532\u3001\u4e59\u4e24\u5806\u7164\u5171440\u5428\uff0c\u5982\u679c\u628a\u7532\u5806\u7164\u8fd0\u8d7025%\uff0c\u4e59\u5806\u7164\u8fd0\u8d7090\u5428\uff0c\u8fd9\u65f6\u4e24\u5806\u7164\u76f8\u7b49\uff0c\u7532\u3001\u4e59\u4e24\u5806\u7164\u539f\u6765\u5404\u6709\u591a\u5c11\u5428\uff1f
21\u3001\u4e24\u4e2a\u5de5\u7a0b\u961f\u5408\u4fee\u4e00\u6bb5\u516c\u8def\uff0c\u7b2c\u4e00\u961f\u6bcf\u5929\u4fee12\u7c73\uff0c\u6bd4\u7b2c\u4e8c\u961f\u5c1120%\uff0c\u5b8c\u6210\u4efb\u52a1\u65f6\u7b2c\u4e8c\u961f\u6bd4\u7b2c\u4e00\u961f\u591a\u4fee18\u7c73\uff0c\u8fd9\u6bb5\u516c\u8def\u957f\u591a\u5c11\u7c73\uff1f
22\u3001\u67d0\u8f66\u95f4\u52a0\u5de5\u4e00\u6279\u96f6\u4ef6\uff0c\u7b2c\u4e00\u5929\u52a0\u5de5\u4e86\u5168\u90e8\u7684 \uff0c\u7b2c\u4e8c\u5929\u5de5\u6548\u63d0\u9ad8\u4e8620%\uff0c\u6bd4\u7b2c\u4e00\u5929\u591a\u52a0\u5de521\u4e2a\uff0c\u8fd9\u6279\u96f6\u4ef6\u5171\u591a\u5c11\u4e2a\uff1f
23\u3001\u67d0\u6821\u4e09\u3001\u56db\u3001\u4e94\u5e74\u7ea7\u5b66\u751f\u5171\u690d\u6811576\u68f5\uff0c\u56db\u5e74\u7ea7\u690d\u7684\u6811\u662f\u4e94\u5e74\u7ea7\u7684 \uff0c\u4e09\u5e74\u7ea7\u690d\u7684\u6811\u662f\u56db\u5e74\u7ea7\u7684 \uff0c\u4e09\u4e2a\u5e74\u7ea7\u5404\u690d\u591a\u5c11\u68f5\uff1f
24\u3001\u6709\u4e24\u5806\u7164\u5171\u91cd24\u5428\uff0c\u5728\u5c0f\u5806\u52a0\u65e5\u51654\u5428\uff0c\u5927\u5806\u7528\u53bb \u540e\uff0c\u4e24\u5806\u7164\u7684\u91cd\u91cf\u6b63\u597d\u76f8\u7b49\uff0c\u539f\u6765\u5927\u3001\u5c0f\u4e24\u5806\u7164\u5404\u91cd\u591a\u5c11\u5428\uff1f
25\u3001\u4e94\u5e74\u7ea7\u5171\u6709196\u4eba\uff0c\u9009\u51fa\u7537\u540c\u5b66\u7684 \u548c6\u540d\u5973\u540c\u5b66\u53c2\u52a0\u6570\u5b66\u7ade\u8d5b\uff0c\u5269\u4e0b\u7684\u7537\u5973\u4eba\u6570\u76f8\u7b49\uff0c\u4e94\u5e74\u7ea7\u7537\u5973\u751f\u5404\u6709\u591a\u5c11\u4eba\uff1f
26\u3001\u679c\u56ed\u91cc\u6709\u4e09\u79cd\u6811\uff0c\u6854\u6811\u6bd4\u68a8\u6811\u591a \uff0c\u6843\u6811\u6bd4\u68a8\u6811\u5c11 \uff0c\u6854\u6811\u6bd4\u6843\u6811\u591a55\u68f5\uff0c\u4e09\u79cd\u679c\u6811\u5404\u6709\u591a\u5c11\u68f5\uff1f
27\uff0e\u6709\u9ed1\u5154\u548c\u767d\u5154\u517160\u53ea\uff0c\u540e\u6765\u5c06\u9ed1\u5154\u768420\uff05\u9001\u7ed9\u522b\u4eba\uff0c\u53c8\u4e70\u56de12\u53ea\u767d\u5154\uff0c\u8fd9\u65f6\u9ed1\u5154\u548c\u767d\u5154\u76f8\u7b49\uff0c\u539f\u6765\u9ed1\u3001\u767d\u5154\u5404\u6709\u591a\u5c11\u53ea\uff1f
28\u3001\u7532\u4e59\u4e24\u4e2a\u4ed3\u5e93\u539f\u6765\u4e00\u5171\u5b58\u7cae780\u5428\uff0c\u4ece\u4e59\u4ed3\u8fd0\u8d70108\u5428\u540e\uff0c\u4e59\u4ed3\u6bd4\u7532\u4ed3\u5b58\u7cae\u768460\uff05\u5c1132\u5428\uff0c\u7532\u4ed3\u5b58\u7cae\u591a\u5c11\u5428\uff1f
29\u3001\u5e03\u5e97\u8fd0\u6765\u767d\u5e03\u3001\u84dd\u5e03\u3001\u82b1\u5e03\u5171138\u7c73\uff0c\u767d\u5e03\u662f\u82b1\u5e03\u7684 \uff0c\u82b1\u5e03\u662f\u84dd\u5e03\u76841.5\u500d\uff0c\u767d\u5e03\u3001\u84dd\u5e03\u3001\u82b1\u5e03\u5404\u8fd0\u6765\u591a\u5c11\u7c73\uff1f
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65\u3001\u6709\u4e00\u6279\u8d27\u7269\uff0c\u7b2c\u4e00\u6b21\u8fd0\u51fa\u603b\u6570\u768440%\u5c112\u5428\uff0c\u7b2c\u4e8c\u6b21\u8fd0\u51fa\u4f59\u4e0b\u7684 \uff0c\u8fd8\u5269\u4e0b\u603b\u6570\u7684 \uff0c\u8fd9\u6279\u8d27\u7269\u6709\u591a\u5c11\u5428\uff1f
66\u3001\u6709\u4e00\u6c60\u6c34\uff0c\u7b2c\u4e00\u5929\u653e\u51fa60\u5428\uff0c\u7b2c\u4e8c\u5929\u653e\u51fa65\u5428\uff0c\u5269\u4e0b\u7684\u6bd4\u8fd9\u6c60\u6c34\u7684 \u5c115\u5428\uff0c\u539f\u6765\u6c34\u6c60\u6709\u6c34\u591a\u5c11\u5428\uff1f
1.\u516d\u5e74\u7ea7\u67093\u4e2a\u73ed\uff0c\u4e00\u73ed\u4eba\u6570\u5360\u4e09\u4e2a\u73ed\u603b\u4eba\u6570\u768425%\uff0c\u4e8c\u73ed\u548c\u4e09\u73ed\u4eba\u6570\u6bd4\u662f7\uff1a8\uff0c\u4e00\u73ed\u6bd4\u4e09\u73ed\u4eba\u6570\u5c1124\u4eba\u3002\u516d\u5e74\u7ea7\u6709\u5b66\u751f\u591a\u5c11\u4eba\uff1f\u4e09\u73ed\u5360\u603b\u4eba\u6570\u7684:8/7+8\u00d7(1-25%)=8/15\u00d73/4=2/524\u00f7(2/5-25%)=24\u00f73/20=160(\u4eba) \u7b54\uff1a\u516d\u5e74\u7ea7\u6709\u5b66\u751f160\u4eba\u30022.\u5feb\u8f66\u4ece\u7532\u7ad9\u5f00\u5f80\u4e59\u7ad9\u9700\u89816\u5c0f\u65f6\uff0c\u6162\u8f66\u4ece\u4e59\u7ad9\u5f00\u5f80\u7532\u7ad9\u9700\u898110\u5c0f\u65f6\uff0c\u4e24\u8f66\u540c\u65f6\u4ece\u4e24\u7ad9\u76f8\u5411\u800c\u884c\uff0c\u76f8\u9047\u65f6\u5feb\u8f66\u884c\u4e86225km\uff0c\u4e24\u7ad9\u76f8\u8ddd\u591a\u5c11\u5343\u7c73\uff1f1\u00f7(1/6+1/10)=1\u00f74/15=15/4(\u5c0f\u65f6)225\u00f7(1/6\u00d715/4)=225\u00f75/8=360(\u5343\u7c73) \u7b54\uff1a\u4e24\u7ad9\u76f8\u8ddd360\u5343\u7c73\u30023.\u706b\u8f66\u7ad9\u65b0\u8fd0\u6765\u4e00\u6279\u94a2\u6750\uff0c\u5176\u4e2d\u768480%\u5c06\u50a8\u5b58\u5728\u7532\uff0c\u4e59\u4e24\u4e2a\u4ed3\u5e93\uff0c\u8fd8\u6709145\u5428\u76f4\u63a5\u8fd0\u5f80\u94a2\u6750\u5e02\u573a\u3002\u5df2\u77e5\u7532\u4e59\u4e24\u4e2a\u4ed3\u5e93\u50a8\u5b58\u7684\u5428\u6570\u662f2\uff1a3\uff0c\u4e24\u4e2a\u4ed3\u5e93\u5404\u50a8\u5b58\u4e86\u591a\u5c11\u5428\uff1f145\u00f7(1-80%)=145\u00f720%=725(\u5428) 725-145=580(\u5428) 2+3=5 580\u00d72/5=232(\u5428) 580\u00d73/5=348(\u5428) \u7b54\uff1a\u7532\u4ed3\u5e93\u50a8\u5b58232\u5428,\u4e59\u4ed3\u5e93\u5404\u50a8\u5b58\u4e86348\u5428\u30024.\u4e94\u516d\u5e74\u7ea7\u540c\u5b66\u5408\u79cd\u4e00\u6279\u6811\u82d7\u3002\u5f53\u4e94\u5e74\u7ea7\u79cd\u4e86\u603b\u68f5\u6811\u768425%\u65f6\uff0c\u516d\u5e74\u7ea7\u6bd4\u4ed6\u4eec\u591a\u79cd\u4e8690\u68f5\u3002\u8fd9\u65f6\u5df2\u79cd\u7684\u4e0e\u5269\u4e0b\u7684\u68f5\u6811\u7684\u6bd4\u662f5\uff1a2\u3002\u5df2\u79cd\u4e86\u591a\u5c11\u68f5\uff1f90\u00f7(5/2+5-25%-25%)=90\u00f7(5/7-1/4-1/4)=90\u00f73/14=420(\u68f5) 420\u00d75/2+5=420\u00d75/7=300(\u68f5) 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17×40＝680, 100－63＝37, 3.2＋1.68＝4.88, 2.8×0.4＝ 1.1214－7.4＝6.6, 1.92÷0.04＝48, 0.32×500＝160, 0.65＋4.35＝ 5
10－5.4＝4.6, 4÷20＝0.2, 3.5×200＝700, 1.5－0.06＝1.44
0.75÷15＝0.05, 0.4×0.8＝0.32, 4×0.25＝1, 0.36＋1.54＝2
1.01×99＝99.99, 420÷35＝12, 25×12＝300, 135÷0.5＝270
3/4 + 1/4 =1, 2 + 4/9 =22/9, 3 - 2/3 =7/3, 3/4 - 1/2= 1/4
1/6 + 1/2 -1/6 =1/2, 7.5-(2.5+3.8)=1.2, 7/8 + 3/8 =5/4
3/10 +1/5 =1/2, 4/5 - 7/10 =1/10, 2 - 1/6 -1/3 =1.5
0.51÷17＝0.03, 32.8＋19＝51.8, 5.2÷1.3＝4, 1.6×0.4＝ 0.64
4.9×0.7＝3.43, 1÷5＝0.2, 6÷12＝0.5, 0.87－0.49＝0.38
2/1*2=1 3/1*3=1 3/2*3=2 3/1*6=2
4/3*8=6 5/3*20=12 7/3*14=6 8/7*40=35
4/3*16=12 9/5*27=15 2/1*30=15 12/7*24=14
30/1*30=1 51/9*102=18 19/9*76=36 4/9*8=18
5/8*90=144 99/98*99=98 3/14*6=28 7/1*28=4
10/1*90=9 5/3*105=63 19/7*38=14 5/1*25=5
8/19*16=38 61/60*122=120 7/2*28=8 6/1*48=8
9/7*18=14 25/7*100=28 9/5*81=45 8/9*16=18
123+25=148 123-35=88 56×7=392 135÷5=27
248+89=337 ... 146-23=123 ... 155×5=775 ... 456-12=38...
456+45=501 ...546-457=89 ... 45×10=451 ... 564-12=47...
879+54=933 ...896-546=350 ...56×12=672.... 45-5=9...
457+456=913...
7+14=21 ... 18-9=9...
8+16=24 ... 25-5=20...
9+18=27... 56-45=11...
10+20=30... 45-23=22...
11+22=33... 78-23=55...
12+24=36...
10-3=7
15-4=11
20-5=15
25-6=19
30-7=23
35-8=27
40-9=31
45-10=35
50-11=39
55-12=43
60-13=47
65-14=51
70-15=55
75-16=59
80-17=63
85-18=67
90-19=71
95-20=75
100-21=79
105-22=83
110-23=87
115-24=91
120-25=95
125-26=99
130-27=103
13+26=39...
14+28=42...
15+30=45...
16+32=48...
17+34=51...
18+36=54...
19+38=57...
20+40=60...
21+42=63...
22+44=66...
23+46=69...
24+48=72...
25+50=75...
26+52=78...
27+54=81...
28+56=84...
29+58=87...
30+60=90...
31+62=93...
32+64=96...
33+66=99...
5 ÷1 =5
10 ÷2 =5
15 ÷3 =5
20 ÷4 =5
25 ÷5 =5
30 ÷6 =5
35 ÷7 =5
40 ÷8 =5
45 ÷9 =5
50 ÷10 =5
55 ÷11 =5
60 ÷12 =5
65 ÷13 =5
70 ÷14 =5
75 ÷15 =5
80 ÷16 5
85 ÷17 5
90 ÷18 5
95 ÷19 5
100 ÷20 5
2/1*2=1 3/1*3=1 3/2*3=2 3/1*6=2 4/3*8=6 5/3*20=12 7/3*14=6 8/7*40=35 4/3*16=12 9/5*27=15 2/1*30=15 12/7*24=14 30/1*30=1 51/9*102=18 19/9*76=36 4/9*8=18 5/8*90=144 99/98*99=98 3/14*6=28 7/1*28=4 10/1*90=9 5/3*105=63 19/7*38=14 5/1*25=5 8/19*16=38 61/60*122=120 7/2*28=8 6/1*48=8 9/7*18=14 25/7*100=28 9/5*81=45 8/9*16=18
12÷3/5=12×（ 5/3） 9÷6/7=9×（ 7/6 ） 30÷5/6=30×（6/5 ） 4×（3/2 ）=4÷2/3 （ 4 ）÷5/7=4×7/5 3÷4/5=3×5/4 （ 24 ）÷7/16=24×（16/7 ） A÷C/B=A×B/C 4÷4/5=5 6÷3/4=8 10÷2/5=25 18÷4/9=81/2 4×4/5=16/5 6×3/4=18/4 10×2/5=4 18×4/9=8 3÷3/4=4 2÷1/3=6 6÷4/5=15/2 1÷5/7=7/5 3/4÷3=1/4 1/3÷2=1/6 4/5÷6=2/15 5/7÷1=5/7
2/1*2=1 3/1*3=1 3/2*3=2 3/1*6=2
4/3*8=6 5/3*20=12 7/3*14=6 8/7*40=35
4/3*16=12 9/5*27=15 2/1*30=15 12/7*24=14
30/1*30=1 51/9*102=18 19/9*76=36 4/9*8=18
5/8*90=144 99/98*99=98 3/14*6=28 7/1*28=4
10/1*90=9 5/3*105=63 19/7*38=14 5/1*25=5
8/19*16=38 61/60*122=120 7/2*28=8 6/1*48=8
9/7*18=14 25/7*100=28 9/5*81=45 8/9*16=18
1.(1+1/2)(1+1/3)(1+1/4)......(1+1/100)
2.(1-1/2)(1-1/3)(1-1/4)......(1-1/100)
3.8+2-8+2
4.25*4/25*4
5.7.26-(5.26-1.5)
6.286+198
7.314-202
8.526+301
9.223-99
10.6.25+3.85-2.125+3.875
11.9-2456*21
12.0.5/11.5-4*2.75
13.1/2×3/5
14.3.375+5.75+2.25+6.625
15.1001－9036÷18
16.3.8×5.25+14.5
17.2.1*4.3+5.7*2.1
18.30×1/3
19.102*45-328
20.2/3×12
21.2.8*3.1+17.6/8
22.3/5×5/6
23.(50-12.5)/2.5
24.2/5×1/3
25.6110*47+639
26.1/2-1/6
27.3.5*2.7-52.2/18
28.1/7×1/5
29.3.375*0.97+0.97*6.625
30.25×4/5
31.6.54+2.4+3.46+0.6
32.5/6-1/2
33.95.6*1.8+95.6*8.2
34.1/2×1/5
35.600-420/12
36.344/3.6-5.4*0.25
37.16/2+30/2+90/6
38.3001-1998.
39.5000-105*34
40.0.15/0.25+0.75*1.2
41.(1/2+1/3+1/4)*0.24
42.(25+4)*4
43.300-4263/21
44.0.81/0.25+5.96
45.403÷13×27
46.1.5×4.2－0.75÷0.25
47.3.27×4 +3.27×5.7
48.（1.2+ 1.8）×4.51025－768÷32
49.0.25×80－0.45÷0.9
50.1025－768÷32
51.0.25*2.69*4
52.2348+275*16
53.2/9*15/8-1/12*9/5
54.2.4+2.4*(5.375-3.375)
55.645-45*12
56.0.15+1.2/0.24-0.45
57.3.75-(2.35+0.25/1.25)
58.76*1/4+23*25/100+0.25
59.10-2.87-7.13
60.0.96+9.6*9.9
61.7.5-5.7*1/3
62.12.37-3.25-6.75
63.16*6.8+2.2*16+16
64.401*19+284
65.58.7-16.65/3.7
66.0.4*4.7*2.5+(2.3+5.3)
67.9.31-1.125-7.875
68.640+128*45
69.8.2*1.6-0.336/4.2
70.400*(0.62+0.08)
17×40＝680, 100－63＝37, 3.2＋1.68＝4.88, 2.8×0.4＝ 1.12
14－7.4＝6.6, 1.92÷0.04＝48, 0.32×500＝160, 0.65＋4.35＝ 5
10－5.4＝4.6, 4÷20＝0.2, 3.5×200＝700, 1.5－0.06＝1.44
0.75÷15＝0.05, 0.4×0.8＝0.32, 4×0.25＝1, 0.36＋1.54＝2
1.01×99＝99.99, 420÷35＝12, 25×12＝300, 135÷0.5＝270
3/4 + 1/4 =1, 2 + 4/9 =22/9, 3 - 2/3 =7/3, 3/4 - 1/2= 1/4
1/6 + 1/2 -1/6 =1/2, 7.5-(2.5+3.8)=1.2, 7/8 + 3/8 =5/4
3/10 +1/5 =1/2, 4/5 - 7/10 =1/10, 2 - 1/6 -1/3 =1.5
0.51÷17＝0.03, 32.8＋19＝51.8, 5.2÷1.3＝4, 1.6×0.4＝ 0.64
4.9×0.7＝3.43, 1÷5＝0.2, 6÷12＝0.5, 0.87－0.49＝0.38
2/1*2=1 3/1*3=1 3/2*3=2 3/1*6=2
4/3*8=6 5/3*20=12 7/3*14=6 8/7*40=35
4/3*16=12 9/5*27=15 2/1*30=15 12/7*24=14
30/1*30=1 51/9*102=18 19/9*76=36 4/9*8=18
5/8*90=144 99/98*99=98 3/14*6=28 7/1*28=4
10/1*90=9 5/3*105=63 19/7*38=14 5/1*25=5
8/19*16=38 61/60*122=120 7/2*28=8 6/1*48=8
9/7*18=14 25/7*100=28 9/5*81=45 8/9*16=18
123+25=148 123-35=88 56×7=392 135÷5=27
248+89=337 ... 146-23=123 ... 155×5=775 ... 456-12=38...
456+45=501 ...546-457=89 ... 45×10=451 ... 564-12=47...
879+54=933 ...896-546=350 ...56×12=672.... 45-5=9...
457+456=913...
7+14=21 ... 18-9=9...
8+16=24 ... 25-5=20...
9+18=27... 56-45=11...
10+20=30... 45-23=22...
11+22=33... 78-23=55...
12+24=36...
10-3=7
15-4=11
20-5=15
25-6=19
30-7=23
35-8=27
40-9=31
45-10=35
50-11=39
55-12=43
60-13=47
65-14=51
70-15=55
75-16=59
80-17=63
85-18=67
90-19=71
95-20=75
100-21=79
105-22=83
110-23=87
115-24=91
120-25=95
125-26=99
130-27=103
13+26=39...
14+28=42...
15+30=45...
16+32=48...
17+34=51...
18+36=54...
19+38=57...
20+40=60...
21+42=63...
22+44=66...
23+46=69...
24+48=72...
25+50=75...
26+52=78...
27+54=81...
28+56=84...
29+58=87...
30+60=90...
31+62=93...
32+64=96...
33+66=99...
5 ÷1 =5
10 ÷2 =5
15 ÷3 =5
20 ÷4 =5
25 ÷5 =5
30 ÷6 =5
35 ÷7 =5
40 ÷8 =5
45 ÷9 =5
50 ÷10 =5
55 ÷11 =5
60 ÷12 =5
65 ÷13 =5
70 ÷14 =5
75 ÷15 =5
80 ÷16 5
85 ÷17 5
90 ÷18 5
95 ÷19 5
100 ÷20 5
2/1*2=1 3/1*3=1 3/2*3=2 3/1*6=2 4/3*8=6 5/3*20=12 7/3*14=6 8/7*40=35 4/3*16=12 9/5*27=15 2/1*30=15 12/7*24=14 30/1*30=1 51/9*102=18 19/9*76=36 4/9*8=18 5/8*90=144 99/98*99=98 3/14*6=28 7/1*28=4 10/1*90=9 5/3*105=63 19/7*38=14 5/1*25=5 8/19*16=38 61/60*122=120 7/2*28=8 6/1*48=8 9/7*18=14 25/7*100=28 9/5*81=45 8/9*16=18
12÷3/5=12×（ 5/3） 9÷6/7=9×（ 7/6 ） 30÷5/6=30×（6/5 ） 4×（3/2 ）=4÷2/3 （ 4 ）÷5/7=4×7/5 3÷4/5=3×5/4 （ 24 ）÷7/16=24×（16/7 ） A÷C/B=A×B/C 4÷4/5=5 6÷3/4=8 10÷2/5=25 18÷4/9=81/2 4×4/5=16/5 6×3/4=18/4 10×2/5=4 18×4/9=8 3÷3/4=4 2÷1/3=6 6÷4/5=15/2 1÷5/7=7/5 3/4÷3=1/4 1/3÷2=1/6 4/5÷6=2/15 5/7÷1=5/7
2/1*2=1 3/1*3=1 3/2*3=2 3/1*6=2
4/3*8=6 5/3*20=12 7/3*14=6 8/7*40=35
4/3*16=12 9/5*27=15 2/1*30=15 12/7*24=14
30/1*30=1 51/9*102=18 19/9*76=36 4/9*8=18
5/8*90=144 99/98*99=98 3/14*6=28 7/1*28=4
10/1*90=9 5/3*105=63 19/7*38=14 5/1*25=5
8/19*16=38 61/60*122=120 7/2*28=8 6/1*48=8
9/7*18=14 25/7*100=28 9/5*81=45 8/9*16=18
1.(1+1/2)(1+1/3)(1+1/4)......(1+1/100)
2.(1-1/2)(1-1/3)(1-1/4)......(1-1/100)
3.8+2-8+2
4.25*4/25*4
5.7.26-(5.26-1.5)
6.286+198
7.314-202
8.526+301
9.223-99
10.6.25+3.85-2.125+3.875
11.9-2456*21
12.0.5/11.5-4*2.75
13.1/2×3/5
14.3.375+5.75+2.25+6.625
15.1001－9036÷18
16.3.8×5.25+14.5
17.2.1*4.3+5.7*2.1
18.30×1/3
19.102*45-328
20.2/3×12
21.2.8*3.1+17.6/8
22.3/5×5/6
23.(50-12.5)/2.5
24.2/5×1/3
25.6110*47+639
26.1/2-1/6
27.3.5*2.7-52.2/18
28.1/7×1/5
29.3.375*0.97+0.97*6.625
30.25×4/5
31.6.54+2.4+3.46+0.6
32.5/6-1/2
33.95.6*1.8+95.6*8.2
34.1/2×1/5
35.600-420/12
36.344/3.6-5.4*0.25
37.16/2+30/2+90/6
38.3001-1998.
39.5000-105*34
40.0.15/0.25+0.75*1.2
41.(1/2+1/3+1/4)*0.24
42.(25+4)*4
43.300-4263/21
44.0.81/0.25+5.96
45.403÷13×27
46.1.5×4.2－0.75÷0.25
47.3.27×4 +3.27×5.7
48.（1.2+ 1.8）×4.51025－768÷32
49.0.25×80－0.45÷0.9
50.1025－768÷32
51.0.25*2.69*4
52.2348+275*16
53.2/9*15/8-1/12*9/5
54.2.4+2.4*(5.375-3.375)
55.645-45*12
56.0.15+1.2/0.24-0.45
57.3.75-(2.35+0.25/1.25)
58.76*1/4+23*25/100+0.25
59.10-2.87-7.13
60.0.96+9.6*9.9
61.7.5-5.7*1/3
62.12.37-3.25-6.75
甲乙两人分别从AB两地出发，共长350米。甲先走了1小时，乙再丛B地出发，两人分别走了3小时后相遇。甲每小时走几米？
解：设甲每小时走X米。
甲：Xx（1+3）
乙：Xx3
Xx（1+3）+Xx3=350
Xx1+X3x+3X=350
1X+3X+3X=350
7X=350
X=5
注意：我在方程省了几步！！！呵呵！！！
题列？？？
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