50道六年级分数乘法简算题 六年级上册分数乘法的简便计算练习题
\u5c0f\u5b66\u516d\u5e74\u7ea7\u5206\u6570\u4e58\u6cd5\u7b80\u4fbf\u8ba1\u7b97\u9898\u3002\u5c0f\u5b66\u516d\u5e74\u7ea7\u5206\u6570\u4e58\u6cd5\u7b80\u4fbf\uff0c\u4f8b\u5982\uff1a63\u00d7\uff081/9+1/7\uff09
63\u00d7\uff081/9+1/7\uff09
=63\u00d71/9+63\u00d71/7
=63\u00f79+63\u00f77
=7+9
=16
\u5229\u7528\u4e58\u6cd5\u7684\u5206\u914d\u5f8b\uff0c\u8fdb\u884c\u7b80\u4fbf\u8ba1\u7b97\u3002
\u6269\u5c55\u8d44\u6599\uff1a
\u7b80\u4fbf\u8ba1\u7b97\u662f\u4e00\u79cd\u7279\u6b8a\u7684\u8ba1\u7b97\uff0c\u5b83\u8fd0\u7528\u4e86\u8fd0\u7b97\u5b9a\u5f8b\u4e0e\u6570\u5b57\u7684\u57fa\u672c\u6027\u8d28\uff0c\u4ece\u800c\u4f7f\u8ba1\u7b97\u7b80\u4fbf\uff0c\u4f7f\u4e00\u4e2a\u5f88\u590d\u6742\u7684\u5f0f\u5b50\u53d8\u5f97\u5f88\u5bb9\u6613\u8ba1\u7b97\u51fa\u5f97\u6570\u3002
\u5229\u7528\u5b9a\u5f8b\u8fdb\u884c\u7b80\u4fbf\u8ba1\u7b97\uff1a
1\u3001\u4e58\u6cd5\u5206\u914d\u5f8b\uff1a
\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
2\u3001\u4e58\u6cd5\u7ed3\u5408\u5f8b\uff1a
\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
3\u3001\u4e58\u6cd5\u4ea4\u6362\u5f8b\uff1a
\u4e58\u6cd5\u4ea4\u6362\u5f8b\u7528\u4e8e\u8c03\u6362\u5404\u4e2a\u6570\u7684\u4f4d\u7f6e\uff1aa\u00d7b=b\u00d7a\uff1b
4\u3001\u52a0\u6cd5\u4ea4\u6362\u5f8b\uff1a
\u52a0\u6cd5\u4ea4\u6362\u5f8b\u7528\u4e8e\u8c03\u6362\u5404\u4e2a\u6570\u7684\u4f4d\u7f6e\uff1aa+b=b+a\uff1b
5\u3001\u52a0\u6cd5\u7ed3\u5408\u5f8b\uff1a
\uff08a+b\uff09+c=a+\uff08b+c\uff09\u3002
\u53c2\u8003\u8d44\u6599\u6765\u6e90\uff1a\u767e\u5ea6\u767e\u79d1-\u7b80\u4fbf\u8ba1\u7b97
\u770b\u56fe\u7247\u5427
2. 1998*(1998/1999)
3. 1/3+2/3+3/3+4/3+5/3
4. 12*12*12*1*0
5. 69/(23/98)
6. 18*(3/18)
7. 2*(2*2/4)
8. 1/36+2/36+3/26+4/36+5/36+…+35/36+36/36
9. 1/25+6/11+24/25+5/11
10. (9/8)*(7/8)*(9/8)*(8/7)
11.5/6×22/32+5/6×5/16
12.4/11×22/5×20/33×1/4
13.1/22×6/5+6/22+21/5
14.1997/1998×33
15.1901/1998×1999
16.1/3+2/3
17.1/3+2/3+1/2
18.18/45+16
19.11/12+123
20.12/13+147
21.14/45+159
22.13/76+357
23.46/49+123
24.13/49+123
25.12/48+18/17
26.19/38+1/2
27.18/36+16+1/2
28.33+1/2
29.22+1/2
30.11+1/2
31.33+2/3
32.11+11/12
33.11+4/8
34.11+4/6+4/6
35.22+4/8+9/3
36.22+22/44+22
37.2+3/6+8/9
38.11+8/9
40.11+7/8
41.22+7/9
42.44+7/8
43.55+4/6
44.44+5/9
45.55+4/9
46.77+7/8
47.88+8/9
48.88+8/9+11
49.99+4/6
50.99+1/3
51.99/1/3
52.99/1/3
53.99/(2/9+3/5+47+69)
54.45+5/6+6/5
55.4+7/4+47/+47/5
56.11+4/9+4/9+4/9+3
57.66+4/6+48/9+48/9+4/9
58.77+8/9+8/9+9/8
59.11+22+33+1238/456
60.44+1/2
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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 10.3/4 脳 8/9...
绛旓細64.5*11/1+11/1*34+2/14
绛旓細鍏勾绾涓婂唽绗竴鍗曞厓鍒嗘暟涔樻硶缁冧範棰橈細1銆佺洿鎺ヨ绠 2銆佸垪寮忚绠楋細3銆佸～绌
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 ...
绛旓細鍛婅瘔璁＄畻鏂规硶鍙互鍚楋紵涔樻硶鏄妸鍒嗗瓙涓庡垎瀛愮浉涔橈紝鍒嗘瘝涓庡垎姣嶇浉涔橈紝鍦ㄨ绠楀墠锛屽鏋滀竴涓垎瀛愯兘涓庡彟涓涓垎姣嶇害鍒嗭紝灏卞敖閲忕害鍒嗐傚2/3脳6/4锛1 闄ゆ硶鏄敤绗竴涓垎鏁板幓涔樼浜屼釜鍒嗘暟鐨勫掓暟锛屽洜姝ゅ氨杞寲鎴愪簡鍒嗘暟涔樻硶銆傚2/3梅4/6锛2/3脳6/4锛1 甯屾湜鍙互甯埌浣犮
绛旓細=-=锛侊紒锛佹仼鈥︹︺愮涓涓9/10脳5/3=3/2 銆愮浜屼釜銆8/9脳9/8=1 銆愮涓変釜銆3/100脳50/9=1/6 銆愮鍥涗釜銆1/3脳1/4=1/12 銆愮浜斾釜銆9/13脳13/3=3 銆愮鍏釜銆12/25脳5/3=4/5 =-=鎭┾︹﹀ソ鍍忔墦澶氫簡涓閬撻锛屽簲璇ユ病闂鍚у凡缁忓緢璇︾粏浜嗭紝涓嶆噦鍙互闂 ...
绛旓細灏忓鍏勾绾у垎鏁颁箻娉绠渚匡紝渚嬪锛63脳锛1/9+1/7锛63脳锛1/9+1/7锛=63脳1/9+63脳1/7 =63梅9+63梅7 =7+9 =16 鍒╃敤涔樻硶鐨勫垎閰嶅緥锛岃繘琛绠渚胯绠銆
绛旓細47.88+8/9 48.88+8/9+11 49.99+4/6 50.99+1/3 51.99/1/3 52.99/1/3 53.99/(2/9+3/5+47+69)54.45+5/6+6/5 55.4+7/4+47/+47/5 56.11+4/9+4/9+4/9+3 57.66+4/6+48/9+48/9+4/9 58.77+8/9+8/9+9/8 59.11+22+33+1238/456 60.44+1/2 ...
绛旓細濡備笅锛4/5*5/4= 12/25*5/3= 2/7*21/2= 6/7-1/3*6= 4/7*42/11= 绛旀锛1銆4/5銆3銆-8/7銆24/11銆備箻闄ゆ硶 1銆鍒嗘暟涔鏁存暟锛屽垎姣嶄笉鍙橈紝鍒嗗瓙涔樻暣鏁帮紝鏈鍚庤兘绾﹀垎鐨勮绾﹀垎銆2銆佸垎鏁颁箻鍒嗘暟锛岀敤鍒嗗瓙涔樺垎瀛愶紝鐢ㄥ垎姣嶄箻鍒嗘瘝锛屾渶鍚庤兘绾﹀垎鐨勮绾﹀垎銆3銆佸垎鏁伴櫎浠ユ暣鏁帮紝鍒嗘瘝涓嶅彉锛屽鏋滃垎瀛愭槸...
