这道六年级分数简便计算怎么做？ 六年级分数简便运算怎么做啊?
\u516d\u5e74\u7ea7\u5206\u6570\u7b80\u4fbf\u8ba1\u7b97\u662f\u4ec0\u4e48?\u516d\u5e74\u7ea7\u4e0a\u518c\u5206\u6570\u7b80\u4fbf\u8fd0\u7b97\u662f\u5982\u4e0b\uff1a
1\u300124.6-3.98+54/10-6.02
\u89e3\u6790\uff1a\u6b64\u9898\u5229\u7528\u52a0\u6cd5\u4ea4\u6362\u7ed3\u5408\u5f8b\uff0c\u51d1\u6574\u518d\u8ba1\u7b97\u3002\u6b65\u9aa4\u5982\u4e0b\uff1a
24.6-3.98+5.4-6.02
=\uff0824.6+5.4\uff09-\uff083.98+6.02\uff09
=30-10
=20
2\u300127\u00d717/26
\u89e3\u6790\uff1a\u6b64\u9898\u5148\u7528\u52a0\u6cd5\u5206\u914d\u5f8b\uff0c\u628a27\u8f6c\u6362\u6210\uff0826\uff0b1\uff09\uff0c\u518d\u5229\u7528\u4e58\u6cd5\u7ed3\u5408\u5f8b\uff0c\u4f7f\u5f97\u8fd0\u7b97\u7b80\u4fbf\u3002
27\u00d717/26
\uff1d\uff0826\uff0b1\uff09\u00d717/26
\uff1d26\u00d717/26\uff0b1\u00d717/26
\uff1d17\uff0b17/26
\uff1d17\u53c817/26
3\u3001528-99/1
\u89e3\u6790\uff1a\u5229\u7528\u51d1\u6574\u6cd5\u548c\u51cf\u6cd5\u7ed3\u5408\u5f8b\u8ba1\u7b97\uff0c\u5148\u5229\u7528\u51d1\u6574\u6cd5\u628a99\u53d8\u6362\u4e3a\uff08100-1\uff09\uff0c\u518d\u8fd0\u7528a-b-c=a-(b+c)\u6765\u7b80\u4fbf\u8ba1\u7b97\uff0c\u6b65\u9aa4\u5982\u4e0b\uff1a
528-99
=528-\uff08100-1\uff09
=528-100+1
=428+1
=429
4\u30011.2\u00d72.5+0.8\u00d72.5
\u89e3\u6790\uff1a\u8fd0\u7528\u63d0\u53d6\u516c\u56e0\u6570\u7684\u65b9\u6cd5\uff0c\u516c\u5f0f\uff1aac+ab=a(b+c)\uff0c\u63d0\u53d6\u516c\u56e0\u65702.5\uff0c1.2\u548c0.8\u76f8\u52a0\u6b63\u597d\u51d1\u6574\u6570\uff0c\u4f7f\u5f97\u8fd0\u7b97\u7b80\u4fbf\u3002
1.2\u00d72.5+0.8\u00d72.5
=\uff081.2+0.8\uff09\u00d72.5
=2\u00d72.5
=5
5\u30012.96\u00d740/1
\u89e3\u6790\uff1a\u6b64\u9898\u5148\u5229\u7528\u4e58\u6cd5\u5206\u914d\u5f8b\uff0c\u628a2.96\u00d740\u8f6c\u6362\u621029.6x4\uff0c\u518d\u5229\u7528\u4e58\u6cd5\u7ed3\u5408\u5f8b\u6765\u7b80\u4fbf\u8ba1\u7b97\u3002
2.96\u00d740
=29.6x4
=\uff0830-0.4\uff09x4
=30\u00d74+0.4\u00d74
=120-1.6
=118.4
1.\u5145\u5206\u8fd0\u7528\u4ea4\u6328\u5f8b.\u7ed3\u5408\u5f8b.\u5206\u914d\u5f8b.
2.\u5145\u5206\u5229\u7528\u4e92\u4e3a\u5012\u6570\u3001\u4e92\u4e3a\u76f8\u53cd\u6570\u7684\u7ed3\u679c1\u548c0 .
3,\u52a0\u51cf\u8fd0\u7b97\u4e2d\u5206\u6bcf\u76f8\u540c\u7684\u7ed3\u5408\u5728\u4e00\u8d77,\u80fd\u51d1\u6574\u7684\u7ed3\u5408\u5728\u4e00\u8d77.
4\u3001\u79c9\u9664\u8fd0\u7b97\u4e2d\u5148\u5316\u5e26\u5206\u6570\u4e3a\u5047\u5206\u6570\u518d\u5c06\u9664\u6570\u98a0\u5012\u4e0e\u88ab\u9664\u6570\u76f8\u4e58
\u80fd\u7ea6\u5206\u7684\u5c3d\u53ef\u80fd\u7ea6\u5206.
5,\u6839\u636e\u5faa\u5e8f\u6e10\u8fdb\u7684\u65b9
=99（2/5+1）---------99变为100-1，便于简单计算，2/5变成小数0.4
=（100-1）×1.4-------用乘法对减法的分配率
=140-1.4
=138.6 即138又5分之3
简便计算过程如下
99×2/5+99
=99×2/5+99×1
=99×（2/5+1）
=99×（2/5+5/5）
=99×7/5
=（100-1）×7/5
=100×7/5-1×7/5
=140-7/5
=140-（5/5+2/5）
=140-（1+2/5）
=140-1-2/5
=139-2/5
=139-0.4
=138.6
望采纳
99×2/5+99
=99×（2/5+1）
=99×7/5
=（100-1）×7/5
=140-7/5
=140-1-2/5
=138又3/5。
99×2/5+99
=99×(2/5+1)
=(100-1)×7/5
=100×7/5-7/5
=140-7/5
=138又3/5
简便计算过程如下
99×2/5+99
=99×2/5+99×1
=99×（2/5+1）
=99×（2/5+5/5）
=99×7/5
=（100-1）×7/5
=100×7/5-1×7/5
=140-7/5
=140-（5/5+2/5）
=140-（1+2/5）
=140-1-2/5
=139-2/5
=139-0.4
=138.6
望采纳
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绛旓細鎸変範鎯啓娉曪細/ 鍓嶉潰鍒嗗瓙锛屽悗闈㈠垎姣 1銆傚師棰=1/9*3/8*4/9+3/8*4/9=1/54+1/6=1/54+9/54=10/54=5/27 2銆傚師棰=锛1/2+1/3+1/6+3/8锛*24=12+8+6+9=35
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