分数乘法的简便运算100个 分数乘法100道带答案
\u5206\u6570\u4e58\u6cd5\u7684\u7b80\u4fbf\u8fd0\u7b97\u662f\u4ec0\u4e48\uff1f\u5728\u5206\u6570\u4e58\u6cd5\u4e2d,\u6574\u6570\u4e58\u6cd5\u7684\u8fd0\u7b97\u5b9a\u5f8b\u5bf9\u4e8e\u5206\u6570\u4e58\u6cd5\u4f9d\u7136\u9002\u7528,\u5728\u5b66\u4e60\u4e2d\u8981\u57f9\u517b\u81ea\u5df1\u7684\u6d1e\u5bdf\u529b,\u6293\u4f4f\u4e00\u4e9b\u9898\u76ee\u7684\u7ed3\u6784\u7279\u70b9,\u7075\u6d3b\u8fd0\u7528\u4e00\u4e9b\u8ba1\u7b97\u6280\u5de7,\u53ef\u4ee5\u4f7f\u8ba1\u7b97\u7b80\u4fbf,\u63d0\u9ad8\u8ba1\u7b97\u3002
\u7b80\u4fbf\u8ba1\u7b97\u4e2d\u6700\u5e38\u7528\u7684\u65b9\u6cd5\u662f\u4e58\u6cd5\u5206\u914d\u5f8b\u3002\u4e58\u6cd5\u5206\u914d\u5f8b\u6307\u7684\u662fax(b+c)=axb+axc\u5176\u4e2da,b,c\u662f\u4efb\u610f\u5b9e\u6570\u3002\u76f8\u53cd\u7684\uff0caxb+axc=ax(b+c)\u53eb\u505a\u4e58\u6cd5\u5206\u914d\u5f8b\u7684\u9006\u8fd0\u7528\uff08\u4e5f\u53eb\u63d0\u53d6\u516c\u7ea6\u6570\uff09\uff0c\u5c24\u5176\u662fa\u4e0eb\u4e92\u4e3a\u8865\u6570\u65f6\uff0c\u8fd9\u79cd\u65b9\u6cd5\u66f4\u6709\u7528\u3002\u4e5f\u6709\u65f6\u7528\u5230\u4e86\u52a0\u6cd5\u7ed3\u5408\u5f8b\uff0c\u6bd4\u5982a+b+c\uff0cb\u548cc\u4e92\u4e3a\u8865\u6570\uff0c\u5c31\u53ef\u4ee5\u628ab\u548cc\u7ed3\u5408\u8d77\u6765\uff0c\u518d\u4e0ea\u76f8\u4e58\u3002\u5982\u5c06\u4e0a\u5f0f\u4e2d\u7684+\u53d8\u4e3ax\uff0c\u8fd0\u7528\u4e58\u6cd5\u7ed3\u5408\u5f8b\u4e5f\u53ef\u7b80\u4fbf\u8ba1\u7b97\u3002
\u4e58\u6cd5\u7ed3\u5408\u5f8b\u4e5f\u662f\u505a\u7b80\u4fbf\u8fd0\u7b97\u7684\u4e00\u79cd\u65b9\u6cd5\uff0c\u7528\u5b57\u6bcd\u8868\u793a\u4e3a(a\u00d7b)\u00d7c=a\u00d7(b\u00d7c)\uff0c\u5b83\u7684\u5b9a\u4e49\uff08\u65b9\u6cd5\uff09\u662f\uff1a\u4e09\u4e2a\u6570\u76f8\u4e58\uff0c\u5148\u628a\u524d\u4e24\u4e2a\u6570\u76f8\u4e58\uff0c\u518d\u548c\u7b2c\u4e09\u4e2a\u6570\u76f8\u4e58\uff1b\u6216\u5148\u628a\u540e\u4e24\u4e2a\u6570\u76f8\u4e58\uff0c\u518d\u548c\u7b2c\u4e00\u4e2a\u6570\u76f8\u4e58\uff0c\u79ef\u4e0d\u53d8\u3002\u5b83\u53ef\u4ee5\u6539\u53d8\u4e58\u6cd5\u8fd0\u7b97\u5f53\u4e2d\u7684\u8fd0\u7b97\u987a\u5e8f\uff0c\u5728\u65e5\u5e38\u751f\u6d3b\u4e2d\u4e58\u6cd5\u7ed3\u5408\u5f8b\u8fd0\u7528\u7684\u4e0d\u662f\u5f88\u591a\uff0c\u4e3b\u8981\u662f\u5728\u4e00\u4e9b\u8f83\u590d\u6742\u7684\u8fd0\u7b97\u4e2d\u8d77\u5230\u7b80\u4fbf\u7684\u4f5c\u7528\u3002
\u5206\u6570\u4e58\u6cd5100\u9053\u5e26\u7b54\u6848
\u5206\u6570\u4e58\u6574\u6570
2/1X8=16
5/8X4=5/2
6/5X5=6
8/7X7=8
6/5\u216910=12
\u5206\u6570\u4e58\u5206\u6570
1/2X6/5=3/5
1/7\u21697/5=1/5
1/7X1/8=1/56
8/9X2/7=18/63
1/22X22/4=1/4
\u5206\u6570\u9664\u5206\u6570
5/4\u00f72/7=35/8
2/3\u00f78/16=3/4
8/6\u00f76/7=14/9
1/22\u00f74/22=1/4
5/2\u00f72/5=25/4
10\u9053\u5206\u6570\u4e58\u6cd5\u9898\u5e26\u7b54\u6848
1. 4/9\u00d74/3=16/27
2. 1/3\u00d71/3=1/9
3. 1/2\u00d71/3=1/6
4. 4/5\u00d73/4=3/5
5. 8/7\u00d71/2=4/7
6. 3/5\u00d75/8=3/8
7. 6/7\u00d73/2=9/7
8. 5/6\u00d78/3=20/9
9. 4/11\u00d73/4=3/11
10. 4/9\u00d73/8=1/6
\u8fd0\u7b97\u6cd5\u5219\uff1a
1.\u5206\u6570\u4e58\u6574\u6570\u65f6\uff0c\u7528\u5206\u6570\u7684\u5206\u5b50\u548c\u6574\u6570\u76f8\u4e58\u505a\u79ef\u7684\u5206\u5b50\uff0c\u5206\u6bcd\u4e0d\u53d8\u3002\u80fd\u7ea6\u5206\u7684\u5148\u7ea6\u5206\u3002
2.\u5206\u6570\u4e58\u5206\u6570,\u7528\u5206\u5b50\u76f8\u4e58\u505a\u79ef\u7684\u5206\u5b50\uff0c\u5206\u6bcd\u76f8\u4e58\u505a\u79ef\u7684\u5206\u6bcd,\u80fd\u7ea6\u5206\u7684\u5148\u7ea6\u5206\u3002
\u6269\u5c55\u8d44\u6599\uff1a
\u5206\u6570\u4e58\u6cd5\u7684\u8fd0\u7b97\u65b9\u6cd5\uff1a\u5206\u6570\u7684\u5206\u5b50\u4e0e\u5206\u5b50\u76f8\u4e58\uff0c\u5206\u6bcd\u4e0e\u5206\u6bcd\u76f8\u4e58\uff0c\u80fd\u7ea6\u5206\u7684\u8981\u5148\u7ea6\u5206\u3002 \u505a\u7b2c\u4e00\u6b65\u65f6\uff0c\u5c31\u8981\u60f3\u4e00\u4e2a\u6570\u7684\u5206\u5b50\u548c\u53e6\u4e00\u4e2a\u5206\u6bcd\u80fd\u4e0d\u80fd\u7ea6\u5206\u3002\u5206\u6570\u4e0e\u6574\u6570\u76f8\u4e58\u5c31\u662f\u628a\u591a\u4e2a\u540c\u6837\u7684\u6570\u53e0\u52a0\uff0c\u5982
X2\uff0c\u5c31\u662f\u63072\u4e2a\u76f8\u52a0\uff0cX10\u662f\u630710\u4e2a\u76f8\u52a0\u3002
\u53c2\u8003\u8d44\u6599\uff1a\u767e\u5ea6\u767e\u79d1-\u5206\u6570\u4e58\u6cd5
\u6c42\u5206\u6570\u4e58\u6cd5\u9898100\u9053\uff0c\u53ea\u8981\u4e58\u6cd5\uff0c\u4e0d\u8981\u9664\u6cd5\uff0c\u52a0\u6cd5\u548c\u51cf\u6cd5\uff0c\u800c\u4e14\u8981\u6709\u7b54\u6848\uff0c
\u80fd\u4e3e\u4e2a\u4f8b\u5b50\u5417\uff1f\u597d\u786e\u5b9a\u4ec0\u4e48\u96be\u5ea6\u7684\u3002
\u516d\u5e74\u7ea7\u5206\u6570\u4e58\u6cd5\u8131\u5f0f\u8ba1\u7b97\u9898\u8981\u7b54\u6848
(80-9.8)\u00d75\u5206\u4e4b2-1.32
=70.2X2/5-1.32
=28.08-1.32
=26.76
8\u00d77\u5206\u4e4b4\u00f7[1\u00f7(3.2-2.95)]
=8\u00d74/7\u00f7[1\u00f70.25]
=8\u00d74/7\u00f74
=8/7
解题思路:四则运算规则(按顺序计算,先算乘除后算加减,有括号先算括号,有乘方先算乘方)即脱式运算(递等式计算)需在该原则前提下进行
解题过程:
1/5×8×5
=1/5×5×8
=1×8
=8
存疑请追问,满意请采纳
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绛旓細98*锛76/100锛42*65-32*42 35*锛3+5锛夛紙1-1/2010锛*2010 3*锛1/4锛*3 87*锛3/86锛夛紙1/2-1/7锛*7*2 5/4*1/8*16 11/12*25-11/12 2012*锛3/2013锛
绛旓細鍒嗘暟涔鏁存暟 2/1X8=16 5/8X4=5/2 6/5X5=6 8/7X7=8 6/5鈪10=12 鍒嗘暟涔樺垎鏁 1/2X6/5=3/5 1/7鈪7/5=1/5 1/7X1/8=1/56 8/9X2/7=18/63 1/22X22/4=1/4 鍒嗘暟闄ゅ垎鏁 5/4梅2/7=35/8 2/3梅8/16=3/4 8/6梅6/7=14/9 1/22梅4/22=1/4 5/2梅2/5=25/4 ...
