六年级分数混合运算简便计算题 小学六年级分数混合运算简便方法
\u7ed9\u70b9\u516d\u5e74\u7ea7\u6570\u5b66\u5206\u6570\u6df7\u5408\u8fd0\u7b97\u9898\u548c\u7b80\u4fbf\u8fd0\u7b97\u9898\u6211\u8fd9\u91cc\u6709\u516d\u5e74\u7ea720\u9053\u8131\u5f0f\u8ba1\u7b97(\u6df7\u5408\u8fd0\u7b97\u9898\u548c\u7b80\u4fbf\u8fd0\u7b97\u9898,\u6211\u8fd8\u7ed9\u4f60\u4e00\u4e9b\u89e3\u65b9\u7a0b\u7684\u9898\uff0c\u516d\u5e74\u7ea7\u6c34\u5e73\u7684)\uff0c\u5e0c\u671b\u5bf9\u4f60\u6709\u5e2e\u52a9!!!
0.4\u00d7125\u00d725\u00d70.8
1.25\u00d7\uff088+10\uff09
9123-\uff08123+8.8\uff09
1.24\u00d78.3+8.3\u00d71.76
9999\u00d71001
14.8\u00d76.3-6.3\u00d76.5\uff0b8.3\u00d73.7
1.24+0.78+8.76
933-157-43
4821-998
32\u00d7125\u00d725
9048\u00f726
2881\u00f7 43
3.2\u00d742.3\u00d73.75-12.5\u00d70.423\u00d716
1.8+18\u00f71.5-0.5\u00d70.3
6.5\u00d78+3.5\u00d78-47
(80-9.8)\u00d75\u5206\u4e4b2-1.32
8\u00d77\u5206\u4e4b4\u00f7[1\u00f7(3.2-2.95)]
2700\u00d7\uff08506\uff0d499\uff09\u00f7900
33.02\uff0d\uff08148.4\uff0d90.85\uff09\u00f72.5
\uff081\u00f71\uff0d1\uff09\u00f75.1
18.1\uff0b\uff083\uff0d0.299\u00f70.23\uff09\u00d71
\u6700\u540e\u795d\u5b66\u4e60\u8fdb\u6b65!!!
\u89e3\u65b9\u7a0b\uff0c\u516d\u5e74\u7ea7\u6c34\u5e73.
X - 15%X = 68 3.5X\uff0b1.8\uff1d12.3 3.6X\u00f72\uff1d2.16 0.8X\uff0d4\uff1d1.6
5X\u00f72\uff1d10 X\uff0d0.25X\uff1d3 4+0.7X=102 X-0.125X=8 x\uff0d0.375x=3/4
5 X\uff0d2.4\u00d75\uff1d8 15X\u00f72\uff1d60 4X\uff0bX\uff1d3.15 3.4X\uff0b1.8\uff1d8.6
5X\uff0dX\uff1d2.4 1.5X\uff0dX\uff1d1 6.6X\uff0d6X\uff1d1.8 x - 0.8x = 16+6
X\uff0b25%X=90 12x=300-4x 30\u00f7x+25=85 410-3x=170 3(x+0.5)=21 0.5x+8=43 6x-3x=18 1.5x+18=3x 5\u00d73-x\u00f72=8 9x-40=5 x\u00f75+9=21 48-27+5x=31 10.5+x+21=56 x+2x+18=78 (200-x)\u00f75=30 (x-140)\u00f770=4 0.1(x+6)=3.3\u00d70.4 4(x-5.6)=1.6 7(6.5+x)=87.5 (27.5-3.5)\u00f7x=4 x+19.8=25.8 5.6x=33.6 9.8-x=3.8 75.6\u00f7x=12.6 5x+12.5=32.3 5(x+8)=102 x+3x+10=70 3(x+3)=50-x+3 5x+6=11 2x-8=10 1/2x-8=4 12\uff0b34x=56 22\uff0d14x=12 54-X=24 7X=49 126\u00f7X=42 13+A=28.5 2.4X=26.4 70%X + 20%X = 3.6 2X\uff0b7X\uff1d9/10 180\uff0b6X\uff1d330 2.2X\uff0d1\uff1d10 X\uff0d0.8X\uff1d10 X\uff0b 2/5X\uff1d21
\u6700\u540e\u795d\u5b66\u4e60\u8fdb\u6b65!!!\u6700\u540e\u795d\u5b66\u4e60\u8fdb\u6b65!!!
\u7b2c\u4e00\u9898\uff1a\uff087/12-14/3\u00f74/3\uff09\u00f749/25
=\uff087/12-14/4\uff09\u00f749/25
=\uff087/12-42/12\uff09\u00f749/25
=\uff08-36/12\uff09\u00f749/25
=-25*3/49=-75/49
\u7b2c\u4e8c\u9898\uff1a\uff085.2\u00d74.8+4.8\u00d74.8\uff09\u00f72/13
=[\uff085.2+4.8\uff09\u00d74.8]\u00d713/2
=48\u00d713/2=13\u00d724=312
\u7b2c\u4e00\u9898\u662f\u8ba9\u4f5c\u9898\u65f6\u5316\u89e3\u7e41\u5206\u65f6\uff0c\u5bf9\u7ea6\u5206\u7684\u638c\u63e1\uff1b\u7b2c\u4e8c\u9898\u4e24\u4e2a\u52a0\u6570\u6709\u76f8\u540c\u4e58\u6570\uff0c\u4e0d\u76f8\u540c\u7684\u53c8\u521a\u597d\u76f8\u52a0\u7b4910 \uff0c\u5176\u5b83\u7684\u5c31\u597d\u7406\u89e3\u4e86\u3002\u5e0c\u671b\u53ef\u4ee5\u6210\u4e3a\u4f60\u7684\u7406\u60f3\u7b54\u6848\uff01
=5/9×9/5+5/9×18 =5/9×5/6+4/9×5/6
=1+10 =(5/9+4/9)×5/6
=11 =1×5/6
=5/6
13/14-15/28÷5/8 4÷4/5-4/5÷4
=13/14-15/28×8/5 =4×5/4-4/5×1/4
=13/14-3/7×2 =5+1/5
=13/14-6/7 =26/5
=1/14
(5/6-3/4)÷3/8 7/11÷[2/5-(1-7/10)}
=(5/6-3/4)×8/3 =7/11÷[2/5-3/10]
=5/6×8/3-3/4×8/3 =7/11÷1/10
=20/9-2 =70/11
=2/9
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绛旓細1. 3/7 脳 49/9 - 4/3 2. 8/9 脳 15/36 + 1/27 3. 12脳 5/6 鈥 2/9 脳3 4. 8脳 5/4 + 1/4 5. 6梅 3/8 鈥 3/8 梅6 6. 4/7 脳 5/9 + 3/7 脳 5/9 7. 5/2 -锛 3/2 + 4/5 锛8. 7/8 + 锛 1/8 + 1/9 锛9. 9 脳 5/6 + 5/6 10....
绛旓細锛133/72 涓冨垎涔嬩笁闄や互銆愶紙浜屽垎涔嬩笁鍑忎簩鍒嗕箣涓锛変箻涓冨垎涔嬪叚銆3/7梅[锕3/2锛1/2锕毭6/7]锛3/7梅[1脳6/7]锛3/7梅6/7 锛1/2 锛堜笁鍒嗕箣浜屽噺浜屽垎涔嬩竴锛夐櫎浠ワ紙涓夊垎涔嬩簲涔樺叚鍒嗕箣浜旓級锕2/3锛1/2锕毭凤箼5/3脳5/6锕氾紳1/6梅25/18 锛3/25 锛堜笁鍒嗕箣浜屽噺浜屽垎涔嬩竴闄や互涓夊垎涔...
绛旓細绗竴棰锛氾紙7/12-14/3梅4/3锛壝49/25 =锛7/12-14/4锛壝49/25 =锛7/12-42/12锛壝49/25 =锛-36/12锛壝49/25 =-25*3/49=-75/49 绗簩棰橈細锛5.2脳4.8+4.8脳4.8锛壝2/13 =[锛5.2+4.8锛壝4.8]脳13/2 =48脳13/2=13脳24=312 绗竴棰樻槸璁╀綔棰樻椂鍖栬В绻佸垎鏃讹紝瀵圭害...
绛旓細3. 12脳 5/6 鈥 2/9 脳3 4. 8脳 5/4 + 1/4 5. 6梅 3/8 鈥 3/8 梅6 6. 4/7 脳 5/9 + 3/7 脳 5/9 7. 5/2 -锛 3/2 + 4/5 锛8. 7/8 + 锛 1/8 + 1/9 锛9. 9 脳 5/6 + 5/6 10. 3/4 脳 8/9 - 1/3 11. 7 脳 5/49 + 3/14 12. 6...
绛旓細2-(1/5+1/3)=2-8/15=30/15-8/15=22/15 (3/4-3/5)梅7/10=3/20 *10/7=3/14 (2/3+2/9)梅20/21=8/9*21/20=14/15 1-5/14梅5/7=1-5/14*7/5=1-1/2=1/2 1/4梅(2/3+1/2)*4/5=1/4梅7/6*4/5=1/4*4/5*6/7=6/35 [8/15-(4/5-3/10)]*15/...
绛旓細13.鍏勾绾鏈夊鐢111浜,鐩稿綋浜庝簲骞寸骇浜烘暟鐨3/4,浜斿勾绾у拰鍏勾绾т竴鍏辨湁澶氬皯浜?14.浜斿勾绾ф湁瀛︾敓128浜恒傚洓骞寸骇姣斾簲骞寸骇澶1/4,鍙堟濂芥槸鍏ㄦ牎瀛︾敓鎬绘暟鐨16%,鍏ㄦ牎鏈夊鐢熷灏戜汉?15.鍏(1)鏈夊悓瀛50浜,鍏朵腑54%鏄敺鍚屽,鐢峰悓瀛︽湁澶氬皯浜?16.浜斿勾绾т綋鑲茶揪鏍囦汉鏁版瘮鍥涘勾绾у2/9,瀹為檯澶12浜恒傚洓骞寸骇浣撹偛杈炬爣鐨勬湁澶氬皯浜?
绛旓細锛2锛39脳24+39脳46+39脳30=3900 锛3锛108脳35=3780 锛4锛345脳98=33810 锛5锛25脳64脳125脳5=1000000 锛6锛8500梅25=340 锛7锛94脳73+27脳94=9400 锛8锛125脳79=9875 锛9锛1.2脳99=118.8 锛10锛9梅0.25=36 锛11锛4.7脳5.9+5.2脳4.7-4.7脳0.1=51.7 锛12锛3.6...
绛旓細8/9 脳 15/36 + 1/27 12脳 5/6 鈥 2/9 脳3 8脳 5/4 + 1/4 6梅 3/8 鈥 3/8 梅6 4/7 脳 5/9 + 3/7 脳 5/9 5/2 -锛 3/2 + 4/5 锛7/8 + 锛 1/8 + 1/9 锛9 脳 5/6 + 5/6 3/4 脳 8/9 - 1/3 7 脳 5/49 + 3/14 6 脳锛 1/2 + 2/3...
绛旓細鎬ユ!200閬鍏勾绾ф贩鍚堣繍绠(鏈濂芥槸鍒嗘暟鐨) 鎴戞潵绛 2涓洖绛 #鐑# 姝﹀ぇ闈栧湪鍐ゥ鐨勮〃鐜,鎬庝箞璇勪环鏈鎭板綋?qqhzx88 2011-01-30 鐭ラ亾绛斾富 鍥炵瓟閲:9 閲囩撼鐜:0% 甯姪鐨勪汉:1.2涓 鎴戜篃鍘荤瓟棰樿闂釜浜洪〉 鍏虫敞 灞曞紑鍏ㄩ儴 (1) 72脳156-56脳72 (2) 0.97脳6.8-0.45脳6.8 (2) 0.25脳0.9脳4 ...