几道简单的数学题（能简算的要用简便的方法计算） 计算下面各题，能简算的用简便方法计算！（求答案及过程，答案要...

\u51e0\u9053\u7b80\u5355\u7684\u6570\u5b66\u8ba1\u7b97\u9898~\uff08\u80fd\u7b80\u7b97\u7684\u8981\u7b80\u7b97\uff09\u901f\u5ea6~\uff01 \u6211\u8fd8\u4f1a\u63d0\u9ad8\u60ac\u8d4f~\uff01

\uff081\uff090.4\u00d758+42\u00d72/5
=0.4\u00d758+42\u00d70.4
=0.4\u00d7\uff0858+42\uff09
=0.4\u00d7100
=40
\uff082\uff094.25\u00d7\u4e8c\u53c8\u4e94\u5206\u4e4b\u56db+1.2+\u4e00\u53c8\u56db\u5206\u4e4b\u4e09
=4.25+2.8+1.2+1.75
=7.05+1.75+1.2
=8.8+1.2
=10
\uff083\uff0987.5%\u00d71/9+7/8\u00d78/9
=0.875\u00d71/9+0.875\u00d78/9
=0.875\u00d7\uff081/9+8/9\uff09
=0.875\u00d71
=0.875
\uff084\uff09\uff083/4-1/2\u00d71/5\uff09\u00f7\uff081/3+1/4\uff09
=\uff083/4-1/10\uff09\u00f7\uff084/12+3/12\uff09
=\uff0815/20-2/20\uff09\u00f77/12
=13/20\u00d712/7
=39/35
=\u4e00\u53c8\u4e09\u5341\u4e94\u5206\u4e4b\u56db
\uff085\uff09230\u00f7\uff081-80%\uff09\u00d750%
=230\u00f720%\u00d71/2
=230\u00d75\u00f72
=1150\u00f72
=575
\uff086\uff0975%\u00d75/9+3/4\u00d77/9-3/4\u00d71/3
=3/4\u00d75/9+3/4\u00d77/9-3/4\u00d71/3
=3/4\u00d7\uff085/9+7/9-1/3\uff09
=3/4\u00d71
=3/4
\u5e0c\u671b\u5bf9\u4f60\u6709\u5e2e\u52a9\u3002

1.
7/12-1/3+5/6
=7/12-4/12+10/12
=13/12

2.
5/8+7/12+3/8
=5/8+3/8+7/12
=1+7/12
=1\u53c87/12

3.
5/6+2/7-1/2
=5/6-3/6+2/7
=1/3+2/7
=7/21+6/21
=13/21

4.
1-3/7-4/7
=1-(3/7+4/7)
=1-1
=0

5.
3/7+1/6+4/7+5/6
=(3/7+4/7)+(1/6+5/6)
=1+1
=2

6.
5/6-(1/4+1/6)
=5/6-1/6-1/4
=2/3-1/4
=8/12-3/12
=5/12

（54 ＋913）÷9
原式=54÷9+913÷9
=6+913/9

276×27÷27.6
原式= 276÷27.6×27
=10×27=270

9.25×9.9＋92.5%
原式 = 9.25×9.9+9.25× 0.1
=9.25×（9.9+0.1）
=9.25×10
=92.5

5.48＋8.73＋4.52＋1.27
原式=（5.48+4.52）+（8.73+1.27）
=10+10
=20

9.7÷1.25÷0.8
原式=9.7÷（1.25×0.8）
=9.7÷1
=9.7

0.4×1.25×25×8
原式=（0.4×25）×（1.25×8）
=10×10
=100

17.5－4.25－5.75
原式=17.5 —（4.25+5.75）
=17.5 —10
7.5

0.125×0.25×32
原式=0.125×0.25×4×8
=（0.125×8）×（0.25×4）
=1×1
=1

（6.3－6.3×0.9）÷6.3
原式=6.3÷6.3 — 6.3×0.9÷6.3
=1— 0.9
=0.1

（720＋1150＋625）÷25
原式=720÷25+1150÷25+625÷25
=28.8+46+25
=99.8

168.8÷(24.3×2－6.4)
原式=168.8÷（48.6-6.4）
=168.8÷42.2
=4

1116＋813－（1116－513）
原式=1116+813-1116+513
=1326

（34＋25）×20＋512
原式=59×20+512
=1180+512
=1692

2500÷56 ＋2500×45
原式=112544.64

375＋(5706－5706)÷48
原式=375+0÷48
=375+0
=375

（54 ＋913）÷9=（54 ＋913）÷9=967÷9=107.44
276×27÷27.6=276÷27.6×27=270
9.25×9.9＋92.5%=9.25×9.9+0.925=9.25×﹙9.9+0.1﹚=92.5

5.48＋8.73＋4.52＋1.27=﹙5.48＋4.52﹚＋﹙8.73＋1.27﹚＝20
9.7÷1.25÷0.8=9.7
0.4×1.25×25×8=﹙0.4×25﹚×﹙1.25×8﹚=100

17.5－4.25－5.75=17.5-（4.25+5.75）=7.5
0.125×0.25×32=0.25×4×0.125×8=1
（6.3－6.3×0.9）÷6.3=6.3（1-0.9）÷6.3=0.1

（720＋1150＋625）÷25=99.8
168.8÷(24.3×2－6.4)=84.4÷﹙24.3－3.2﹚=84.4÷21.1=4

1116＋813－（1116－513）=1313（这也叫题目?!）
（34＋25）×20＋512=1180+512=1692

2500÷56 ＋2500×45=112544.64(是不是我功力不够，看不懂出题人的意思？)
375＋(5706－5706)÷48=375

銆鏁板璁＄畻棰樸鑳界畝绠楃殑瑕绠绠,璋㈣阿
绛旓細64.83+5鍙18/19+35.17+44鍙1/19 =(64.83+35.17)+(5鍙18/19+44鍙1/19)=100+50 =150 34鍙3/4-锛2鍙3/19-15.25锛=34鍙3/4-2鍙3/19+15.25 =34鍙3/4+15.25-2鍙3/19 =34鍙3/4+15鍙1/4-2鍙3/19 =50-2鍙3/19 =47鍙16/19 2鍙1/2脳5鍙7/11脳12.5脳0.032...

鍑犻亾绠鍗曠殑鏁板璁＄畻棰榽(鑳界畝绠楃殑瑕绠绠)閫熷害~! 鎴戣繕浼氭彁楂樻偓璧弤!_鐧...
绛旓細锛1锛0.4脳58+42脳2/5 =0.4脳58+42脳0.4 =0.4脳锛58+42锛=0.4脳100 =40 锛2锛4.25脳浜屽張浜斿垎涔嬪洓+1.2+涓鍙堝洓鍒嗕箣涓 =4.25+2.8+1.2+1.75 =7.05+1.75+1.2 =8.8+1.2 =10 锛3锛87.5%脳1/9+7/8脳8/9 =0.875脳1/9+0.875脳8/9 =0.875脳锛1/9+8...

鏈鍑犻亾鏁板棰涓嶄細鍋,澶у甯府蹇欏晩(瑕佺畝绠楃殑)
绛旓細1. 鍘熷紡=5.25*(8.2+0.8+1)=5.25*10=52.5 2.鍘熷紡=1/2 + 41/50 脳 25/36 脳 2/5= 1/2 + 41/180 =131/180 3.鍘熷紡锛1.32梅锛18梅0.9锛夛紳1.32梅20锛0.066

杩欎笁棰樻庝箞鍋氬晩 ,鑳界畝绠楃殑绠绠 鍥涘勾绾鏁板
绛旓細瑙ｏ細17.95-10.31-2.69 =17.95-(10.31+2.69)=17.95-13 =4.95 29.82+4.53-7.82 =29.82-7.82+4.53 =22+4.53 =26.53 7.09+6.85-6.08+6.36 =(7.09-6.08)+(6.85+6.36)=1.01+13.21 =14.22

鍑犻亾鏁板棰涓嶄細,澶у甯府蹇,璋㈠暒~
绛旓細1.锛堣兘绠绠楃殑瑕绠绠楋級2.5脳1.7脳0.4=2.5脳0.4脳1.7=1脳1.7=1.7 4.8-4.8脳0.5=4.8脳锛1-0.5锛=4.8脳0.5=2.4 2.搴旂敤棰樸備箰灞卞ぇ浣涢珮71绫炽傜伒灞卞ぇ浣涙瘮涔愬北澶т經鐨1.2鍊嶈繕楂2.8绫炽傜伒灞卞ぇ浣涚殑楂樺害鏄澶氬皯绫筹紵71绫趁1.2+2.8绫=88绫 3.鍦ㄦ柟妗嗛噷濉笂閫傚綋鐨勬暟瀛楋紝骞剁粰...

鍏充簬鏁板鐨鑴卞紡杩愮畻(鑳界畝绠楃殑瑕绠绠)
绛旓細锛1/2锛*锛3/4-3/5锛夐櫎浠7/10 =3/40脳10/7 =3/28 4-7/9闄や互4-7/9=1

灏忓鏁板棰,鑳界畝绠楃殑瑕绠绠
绛旓細鐪嬪浘鐗 棰樼洰娌￠敊鍚э紝鏈闂璇疯拷闂

鎬!!!鍑犻亾鏁板棰樿绠绠,璇︾粏鍐欍
绛旓細鍥炵瓟锛200涔199鍒嗕箣198 =(199+1)脳198/199 =199脳198/199+1脳198/199 =198+198/199 =198鍙198/199 63涔64鍒嗕箣63 =(64-1)脳63/64=63-63/64=62鍙1/64

鏁板棰樼洰 閫熷害鏉 鑳界畝绠楃殑灏卞繀椤荤畝绠 12閬撻
绛旓細1. 14.75-锛2鍙4/7-1鍙1/4锛=14+3/4-(2+4/7-1-1/4)=14+3/4-2-4/7+1+1/4 =14-2+1+3/4+1/4-4/7 =13+1-4/7 =13+3/7 =13鍙3/7 2. 3鍙5/9-锛1鍙5/9-2/7锛=3+5/9-(1+5/9-2/7)=3+5/9-1-5/9+2/7 =3-1+5/9-5/9+2/7 =2+2/7 =2...

銆鏁板璁＄畻棰樸鑳界畝绠楃殑瑕绠绠,璋㈣阿鎮ㄥ暒銆傝緵鑻︿簡
绛旓細锛4221²-21²锛壝凤紙42²脳101锛=(4221+21)x(4221-21)梅锛42²脳101锛=4242脳4200梅锛42²脳101锛=42脳101脳42脳100梅锛42²脳101锛=42²脳101脳100梅锛42²脳101锛=100 (206锛315脳5770)/(5769脳315锛521)=(206锛315+315脳5769)/(5769脳...

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