7x95+5x95-95x2四年级下册怎样简便计算？ 四年级下册简便运算
\u56db\u5e74\u7ea7\u4e0b\u518c\u768445+5\u00d795 (\u7b80\u4fbf\u8ba1\u7b97)45+5\u00d795
=5\u00d79+5\u00d795
=5\u00d7\uff089+95\uff09
=5\u00d7104
=520
\u56db\u5e74\u7ea7\u4e0b\u518c\u7b2c\u4e09\u5355\u5143\u7b80\u4fbf\u8fd0\u7b97\u4e3e\u4f8b\u3001\u7ec3\u4e60
\u7b2c\u4e00\u79cd \uff08\u4f8b\uff09 25x(4+8) 125x(8+8) (11+25)x8 =25 x4+15 x8 =100+120 =220
\u7b2c\u4e8c\u79cd\uff08\u4f8b\uff0984x101 504x25 78x102 25x204 =84 x\uff08100+1\uff09 =84 x100+84 x1 =8400+84 =8484
\u7b2c\u4e09\u79cd\uff08\u4f8b\uff0999x64 99x16 638x99 999x99 =(100-1) x64 =100 x64-1 x64 =6400-64 =6336
\u7b2c\u56db\u79cd(\u4f8b)99X13+13 25+199X25 32X16+14X32 78X4+78X3+78X3 =\uff0899+1\uff09x13 =100 x13 =1300
\u7b2c\u4e94\u79cd\uff08\u4f8b\uff0925X32X125 125X32X8 88X125 72X125 =\uff0825 X4\uff09 X\uff088 X125\uff09 =100 X1000 =100000 \u7b2c\u516d\u79cd\uff08\u4f8b\uff093600\u00f725\u00f74 8100\u00f74\u00f775 3000\u00f7125\u00f78 1250\u00f725\u00f75 =3600\u00f7\uff0825 X4\uff09 =3600\u00f7100 =36
\u7b2c\u4e03\u79cd1200-624-76 2100-728-772 273-73-27 847-527-273 =1200-\uff08624+76\uff09 =1200-700 =500
\u7b2c\u516b\u79cd278+463+22+37 732+580+268 425+14+186 =\uff08278+22\uff09+\uff08463+37\uff09 =300+500 =800
\u7b2c\u4e5d\u79cd 214-\uff0886+14\uff09 787-\uff0887-29\uff09 365-\uff0865+118\uff09 455-\uff08155+230\uff09 =214-14-86 =200-86 =114
\u7b2c\u5341\u79cd 871-299 157-99 363-199 968-599 =871-300+1 =571+1 =572
\u7b2c\u5341\u4e00\u79cd 178X101-178 83X102-83X2 17X23-23X7 35X127-35X16-11X35 =\uff08101-1\uff09X178 =100 X178 =17800
\u7b2c\u5341\u4e8c\u79cd 64\u00f7\uff088X2\uff09 1300\u00f7(13 X5) 480\u00f7(8 X2) =64\u00f78\u00f72 =8\u00f72 =4
\u7b2c\u5341\u4e09\u79cd 625\u00f725 360\u00f724 270\u00f745 =625\u00f75\u00f75 =125\u00f75 =25
\u7b2c\u5341\u56db\u79cd100+45-100+45 25+75-25+75 423+76-76+77 243+85-243+85 =\uff08100-100\uff09+\uff0845+45\uff09 =0+90 =90
\u7b2c\u5341\u4e94\u79cd20X4\u00f720X4 25X4\u00f725X4 56X8\u00f756X8 12X6\u00f712X6 =\uff0820\u00f720\uff09X\uff084X4\uff09 =1 X 16 =16
\u7ec3\u4e60\uff1a169+354+231+146 987-362-138 1347-\uff08347+125\uff09
135+236-135+236 198 X26 148 X56-48 X56 210\u00f715 199 X37+37 215 X63-15 X63 101 X22-22 203 X14 125 X33 X4 125 X16 X50 365+997 452-398
\u7b80\u4fbf\u8fd0\u7b97\u4e60\u9898 1.\u52a0\u6cd5\u4ea4\u6362\u5f8b\uff08a+b=b+a\uff09 \u5982\uff1a152+389+348 =152+348+399 =500+399 =899
\u4e60\u9898\uff1a77+56+23 165+477+135 154+288+46 2.\u52a0\u6cd5\u7ed3\u5408\u5f8ba+b+c=a+(b+c) \u5982\uff1a591\uff0b482\uff0b118 =591\uff0b\uff08482\uff0b118\uff09 =591+600 =1191
\u4e60\u9898\uff1a285+147+253 99+178+122 456+588+412 692+325+75 3.\u52a0\u6cd5\u4ea4\u6362\u5f8b\u3001\u7ed3\u5408\u5f8b \u5982\uff1a32\uff0b29\uff0b68\uff0b41
=32+68+29+41 \u52a0\u6cd5\u4ea4\u6362\u5f8b
=\uff0832+68\uff09+\uff0829+41\uff09 \u52a0\u6cd5\u7ed3\u5408\u5f8b =100+70 =170
\u4e60\u9898\uff1a\uff08148+64\uff09+\uff0852+136\uff09 650+\uff08171+350\uff09+129 128+114+86+172
4.\u4e58\u6cd5\u4ea4\u6362\u5f8ba\u00d7b=b\u00d7a \u5982\uff1a25\u00d745\u00d74 =25\u00d74\u00d745 =100\u00d745 =4500
25\u00d731\u00d74 125\u00d727\u00d78 40\u00d769\u00d725 5.\u4e58\u6cd5\u7ed3\u5408\u5f8b\uff1aa\u00d7b\u00d7c= a\u00d7(b\u00d7c)
\u5982\uff1a78\u00d7125\u00d78 125\u00d732
=78\u00d7\uff08125\u00d78\uff09 =125\u00d7\uff088\u00d74\uff09 =78\u00d71000 =125\u00d78\u00d74 =78000 =4000
\u4e60\u9898\uff1a52\u00d725\u00d74 125\u00d772 125\u00d788 25\u00d732 25\u00d744 125\u00d748 6.\u4e58\u6cd5\u4ea4\u6362\u5f8b\u3001\u7ed3\u5408\u5f8b
\u5982\uff1a125\u00d74\u00d78\u00d725 =125\u00d78\u00d74\u00d725 \u4e58\u6cd5\u4ea4\u6362\u5f8b
=\uff08125\u00d78\uff09\u00d7\uff084\u00d725\uff09\u4e58\u6cd5\u7ed3\u5408\u5f8b =1000\u00d7100 =100000
\u4e60\u9898\uff1a125\u00d725\u00d732
7.\u4e58\u6cd5\u5206\u914d\u5f8b\uff1aa\u00d7(b+c)=a\u00d7b+a\u00d7c
\u5982\uff1a27\u00d757+27\u00d743 27\u00d799+27 27 \u00d799 =27\u00d7\uff0857+43\uff09 =27\u00d7\uff0899+1\uff09 =27\u00d7\uff08100-1\uff09 =27\u00d7100 =27\u00d7100 =27\u00d7100-27\u00d71 =2700 =2700 =2673
\u4e60\u9898\uff1a67\u00d734+67\u00d766 127\u00d743-27\u00d743 27\u00d7101-27
27 \u00d7101 67\u00d721+67\u00d778+67 67\u00d723+67\u00d778+67-67 12\u00d7340+66\u00d7120 25\u00d744 125\u00d788 85\u00d7102 69\u00d7102 78\u00d798 65+65\u00d799 5\u00d787+87+87\u00d74 8.\u51cf\u6cd5\u8fd0\u7b97\u6027\u8d28; a-b-c=a-(b+c)=a-c-b
\u5982\uff1a781-178-122 721-488-121 745-\uff08245+188\uff09 =781-\uff08178+122\uff09 =721-121-488 =745-245-188 =781-300 =600-488 =500-188 =481 =112 =312
\u4e60\u9898\uff1a 456-273-127 623-169-223 553-\uff08289+153 \uff09 772-456+228 689-\uff08289-153 \uff09 136-88+164-112 9.\u9664\u6cd5\u8fd0\u7b97\u6027\u8d28;a \u00f7b \u00f7c=a \u00f7(b\u00d7c)=a \u00f7c \u00f7b \u5982\uff1a720 \u00f7 36 \u00f7 2
=720\u00f7\uff08 36 \u00d72\uff09 =720 \u00f7 72 =10
\u4e60\u9898\uff1a2700\u00f725\u00f74 5600\u00f725\u00f756 3900 \u00f7\uff0839\u00d74\uff09
\u600e\u6837\u7b80\u4fbf\u5c31\u600e\u6837\u7b97\u3002
\u4e00\u3001355+260+140+245 98\u00d7101 48\u00d7125 645-180-245 38\u00d799\uff0b38 3500\u00f714\u00f75 175\u00d756\uff0b25\u00d756 50\u00d725\u00d720\u00d740 \u4e8c\u3001368+156+344+132 125\u00d747\u00d78 7200\u00f725\u00f74 44\u00d725
96\u00d758+96\u00d742 6300\u00f7\uff0863\u00d75\uff09 482 -\uff08182+50\uff09 135\u00d727+135\u00d772+135 \u4e09\u3001368+156+344+132 125\u00d747\u00d78 7200\u00f725\u00f74 44\u00d725
96\u00d758+96\u00d742 6300\u00f7\uff0863\u00d75\uff09 482 -\uff08182+50\uff09 135\u00d727+135\u00d772+135 \u56db\u3001789-136-64 132\u00d729+132 98\u00d783+166 3700\u00f74\u00f725 88\u00d71250 48\u00d7125 125\u00d732\u00d7125 36\u00d788+36\u00d715-108
\u4e94\u3001355+260+140+245 98\u00d7101 48\u00d7125 645-180-245 38\u00d799\uff0b38 3500\u00f714\u00f75 175\u00d756\uff0b25\u00d756 125\u00d732\u00d725 \u516d\u300198+265+202 273-73-27 250\u00d713\u00d74 3200\u00f74\u00f725 88\u00d7125 99\u00d738+38 17\u00d723-23\u00d77 72\u00d7125 \u4e03\u300164\u00d715-5\u00d764 25\u00d7\uff0812\u00d740\uff09 99\u00d756+56 2182\uff0d1655\uff0d345 3200\u00f74\u00f725 298\u00d799\uff0b298 (40\uff0b8)\u00d725 97\u00d78\u00d7125
\u516b\u3001355+260+140+245 102\u00d799 2\u00d7125 645-180-245 382\u00d7101-382 4\u00d760\u00d750\u00d78 35\u00d78+35\u00d76-4\u00d735 125\u00d732 \u4e5d\u300125\u00d746 101\u00d756 99\u00d726 1022\uff0d478\uff0d422 987\uff0d\uff08287\uff0b135\uff09 478\uff0d256\uff0d144 672\uff0d36\uff0b64 36\uff0b64\uff0d36\uff0b64 \u5341\u3001487\uff0d287\uff0d139\uff0d61 500\uff0d257\uff0d34\uff0d143 2000\uff0d368\uff0d132 1814\uff0d378\uff0d422 89\u00d799\uff0b89 155\uff0b264\uff0b36\uff0b44 25\u00d7\uff0820\uff0b4\uff09 88\u00d7225\uff0b225\u00d712 \u5341\u4e00\u3001698\uff0d291\uff0d9 568\uff0d\uff0868\uff0b178\uff09 561\uff0d19\uff0b58 382\uff0b165\uff0b35\uff0d82 236+189+64 759-126-259 25\u00d779\u00d74 569-256-44 \u5341\u4e8c\u3001
216+89+11 57\u00d7125\u00d78 1050\u00f715\u00f77 169\u00d7123\u201423\u00d7169 37\u00d799+37 129\u00d7101\u2014129 149\u00d769\u2014149+149\u00d732 56\u00d751+56\u00d748+56 \u5341\u4e09\u3001125\u00d725\u00d732 24\u00d725 125\u00d748 514+189\u2014214 369\u2014256+156 56\u00d725\u00d74\u00d7125 24\u00d773+26\u00d724 109+\uff08291\u2014176\uff09 \u5341\u56db\u300116\u00d798+32 512+\uff08373\u2014212\uff09 228+\uff0872+189\uff09 169+199 586\u00d799 575\u2014250\u2014275 37\u00d721\u201421\u00d712\u201421 125\u00d788\u00d725 \u4e09\u3001\u8ba1\u7b97\uff08\u80fd\u7b80\u4fbf\u5c31\u7b80\u4fbf\uff09
\u4e00\u300185+14\u00d7\uff0814+208\u00f726\uff09 21+(327-23)\u00f719 539-513\u00f7(378\u00f714) 34-3094\u00f717\u00f713 19+(253-22)\u00f721 50+20\u00d728-42 (23+23)\u00d724-597 (110-10)\u00f710-10 45-24+14\u00d714 \u4e8c\u3001304-275\u00f7(275\u00f725) (70+10)\u00f7(18-10) 120\u00f712\u00d718-54 44+16\u00d715-32 (10-100\u00f710)\u00d711 (53-588\u00f721)\u00d736 (60+10)\u00f7(17-10) 17+(233-43)\u00f710 100\u00f710\u00d710-60 \u4e09\u3001424-475\u00f719\u00d716 22+(374-10)\u00f726 (245-11)\u00f718-11 22-(10+100\u00f710) (252-14)\u00f717-10 35-13+10\u00d715 (346-10)\u00f716-12 215-198\u00f7(121\u00f711) (45-651\u00f721)\u00d733 \u56db\u300119+192\u00f712-10 572\u00f722\u00d723-158 19+56-1224\u00f734 (714-12)\u00f727-19 14+(21-19)\u00d714 18-(13+15)\u00f7262 736\u00f7(43-20)\u00d723 (227+11)\u00f7(31-14) 36+19\u00d714-23 \u4e94\u3001828\u00f723\u00d712-48 18-15+10\u00d718 (31-154\u00f711)\u00d712 (1369-37)\u00f737-32 160\u00f7(22-12)\u00d722 357\u00f721\u00d713-213 985-728\u00f726\u00d735 (438-39)\u00f721-12 (20+18)\u00d711-239
\u516d\u300150\uff0b160\u00f740 \uff0858+370\uff09\u00f7\uff0864-45\uff09 120-144\u00f718+35 78\u00d750\uff0d1440\u00f712 3856\u00f716+85\u00d716 4000\u00f7\uff0816+832\u00f713\uff09 \uff08326+95\u00d725\uff09\u00f737 \uff087236\u00f718\uff0d228\uff09\u00d728 \uff084275\uff0d24\u00d775\uff09\u00f725 \u4e03\u3001178-145\u00f75\u00d76+42 420+580-64\u00d721\u00f728 812-700\u00f7\uff089+31\u00d711\uff09 50\uff0b160\u00f740=54 120-144\u00f718+35=147 \uff0858+37\uff09\u00f7\uff0864-9\u00d75\uff09 95\u00f7\uff0864-45\uff09 178-145\u00f75\u00d76+42 120-36\u00d74\u00f718+35 \u516b\u300158\u00d758\uff0b58\u00d742 3874\uff0d\uff08874\uff0b1000\uff09 136\u00d7101-136 329\uff0d38\uff0d62 347\uff0d129\uff0d147 4600\u00f725\u00f74 6000\u00f7125\u00f78 25\u00d7125\u00d732 360\u00f745 \u4e5d\u300144\u00d725 591\uff0b482\uff0b118 99\u00d7I26 125\u00d715\u00d78 986+1999 473+79-63 80\u00d7501-80 76+38+24+162 199\u00d799+199
\u5341\u300125\u00d7125\u00d74\u00d78 40\u00d79\u00d725\u00d78 55\u00d725+25\u00d745 32+129+268+71 438+126+162+674 55\u00d755+45\u00d755 8\u00d76\u00d7125\u00d75 8\u00d7135+8\u00d765 56\u00d737-56\u00d726-56
\u5341\u4e00\u300145\u00d712+55\u00d712 42\u00d79+58\u00d79 55\u00d745+45\u00d745 18\u00d727+18\u00d723 58\u00d7137-58\u00d737 78\u00d78-28\u00d78 7\u00d769+7\u00d721 36\u00d727+27\u00d764 99\u00d764+64 \u5341\u4e8c\u3001250\u00d736 48\u00d7250 202\u00d745 125\u00d732 199\u00d750 301\u00d730
45\u00d7201-45 49\u00d749+49 25\u00d7\uff088+40\uff09 \u5341\u4e09\u30018\u00d76\u00d7125 7\u00d74\u00d7250 250\u00d73\u00d74 9\u00d759+9\u00d731 8\u00d713\u00d7125 99\u00d799+99 99\u00d7199+99 35\u00d7401-35 39\u00d7101-39 \u5341\u56db\u300125\u00d732\u00d7125 15\u00d7\uff084+16\u00f74\uff09 165-35-65 94\uff0b38\uff0b106\uff0b62 125\u00d715\u00d78 25\u00d732\u00d7125 125\u00f725\u00d78 125\u00d748 989\uff0d186\uff0d14 \u5341\u4e94\u30014600\u00f725\u00f74 136\u00d7101\uff0d136 32\u00d737\uff0b47\u00d737\uff0b21\u00d737 99\u00d777\uff0b77 99\u00d78 78\u00d737\uff0d37\u00d768
\uff08125\u00d799+125\uff09\u00d716 5\u00d7999+5+99\u00d77+7+3\u00d79+3+9 \u5341\u516d\u3001355+260+140+245 102\u00d799 645-180-245 382\u00d7101-382 4\u00d760\u00d750\u00d78 35\u00d78+35\u00d76-4\u00d735
95×10啊，结果就等于950。
只要把95提出来，而且你给的这倒算式里面少了一个符号，可以变成95乘以括号几加几减几
提取公因式95，就会使复杂问题简单化。
95（7+5-2）=950
7x95+5x95-95x2=95×（7+5-2）=95×10=950
方法如下，
请作参考：
绛旓細3+1 4+1 5+1 6+1 <<<鍥介檯甯傚満甯哥敤瑙勬牸鍜屽帤搴>>> 鑻卞 瑙勬牸锛坢m锛夊帤搴(涓) PET+EVA micron 2X3 60X95 38+22 50+30 75+50 100+50 3X5 70X100 38+22 50+30 75+50 100+50 4X6 95X135 38+22 50+30 75+50 100+50 5X7 110X160 38+22 50+30 75+50 ...
绛旓細濡備笅锛歁AREV-ET4VM-3TX8I PY4TJ-0Q936-TZ9DK HAJIR-8VV00-RDV97 4WHX2-JTAZA-ZB2EW KHDN6-6WZKI-T2GYA 00H3D-08TXW-LRLZE 29N8T-G0FFG-5HN0Z 婵娲荤爜灏变娇鐢ㄨ寖鍥达紝涓昏鍒嗕袱绉嶏細涓绉嶆槸涓鑸蒋浠剁殑婵娲荤爜锛涗竴绉嶆槸娓告垙婵娲荤爜銆備竴浜涜蒋浠朵负浜嗕娇浠栦滑鐨勮蒋浠堕潰瀵圭壒瀹氱殑浠樿垂浜虹兢锛屽湪杞欢涓婃坊鍔犱簡...
绛旓細268110-050524 208*95*20 鍙岄緳璺笣 97919-3B500 263*193*69 鐜颁唬涓栫邯鐧惧勾 187*237*19 鍗冮噷椹攼娆 97133-2E210 224x204x16.5 07娆捐捣浜氫匠涔 閫氱敤10406026 288x188x30 涓婃捣鍒厠鏂颁笘绾 92098459 415x156x17 涓婃捣璧涙 52482929 225x112x57 涓婃捣鍒厠鍟嗗姟杞L8 96554421 230x210x25 鍑秺 25740404 24x235x265 鍥...
绛旓細24涓 1 姣忛殧5涓紝浼氫骇鐢熶竴涓0锛屾瘮濡 5锛 10 锛15锛20.銆傘2 姣忛殧 5脳5 涓細澶氫骇鐢熷嚭涓涓0锛屾瘮濡 25锛50锛75锛100 3 姣忛殧 5脳5脳5 浼氬鍑轰竴涓0锛屾瘮濡125.銆傘傛墍浠 100鐨勬湯灏0鐨勪釜鏁颁负 100/5 + 100/25 = 20+4 = 24涓 ...
绛旓細6銆佷箣鍚庡嵆鍙湅鍒拌皟鏁村畬鎴愮殑鏁堟灉銆7銆佹垜浠繕鍙互鐐瑰嚮鈥滃浘鍍忊濃啋鈥滆皟鏁粹濃啋鈥滆嚜鍔ㄩ鑹测濄8銆佷箣鍚庡浘鐗囧嵆鍙嚜鍔ㄥ畬鎴愰鑹茬殑璋冩暣銆傛嫇灞曪細 PS甯哥敤鍒朵綔灏哄銆佸父鐢ㄥ吀鍨嬮鑹茶壊鍊 鍚嶇墖 妯増:90x55mm 85x54mm 绔栫増:50x90mm 54x85mm 鏂圭増:90x90mm 90x95mm IC鍗 85x54MM 涓夋姌椤靛箍鍛 鏍囧噯灏哄: (A4)210mm ...
绛旓細鑷充簬鎬庝箞浼扮畻 鍙ｈ瘈锛10涓5锛岀櫨涓2锛16銆25鍥涘嶏紝35銆50涓夊嶏紝70銆85涓ゅ嶅崐 渚嬪锛6MM2鐨勭嚎鍙浇璐熻嵎 6*5=30A 25MM2鐨勭嚎鍙浇璐熻嵎 25*4=100A 2銆佷緥濡傦細BV-2x2.5mm2銆乊JV-3x95+2x50mm2-SC100銆乊JV-5x10mm2-SC40銆乊JV-4x35+1x25mm2-SC100銆乊JV-4x185+1x95mm2-SC100銆乊JV-4x25+...
绛旓細2.5脳56+4.5脳65=432.5銆傜畝渚胯绠楄繃绋嬪涓嬶細2.5脳56+4.5脳65 =2.5脳56+0.5脳9脳5脳13 =2.5脳56+2.5脳117 =2.5脳锛56+117锛=2.5脳173 =2.5脳160+2.5脳10+2.5脳3 =2.5脳4脳40+25+7.5 =400+25+7.5 =432.5 ...
绛旓細=2003梅锛2003-2003/2004)=2003X2004/[2003X(2004-1)]=2004/2003 (1+2/3)*(1-2/3)*(1+2/5)*(1-2/5)路路路*(1+2/99)*(1-2/99锛=5/3X1/3X7/5X3/5X9/7X5/7X11/9X7/9路路路X95/93X91/93X97/95X93/95X99/97X95/97X101/99X97X99 =1/3X101/99 =101/297 ...
绛旓細棰樻剰锛氬垎瑙ｈ川鍥犳暟鍚庯紝鎶婅川鍥犳暟鍒嗘垚涓ょ粍锛屼娇涓ょ粍涓惈鏈夌浉鍚岀殑璐ㄥ洜鏁 涓銆佸垎瑙ｈ川鍥犳暟 52=13*2*2 57=19*3 65=13*5 68=17*2*2 69=23*3 95=19*5 119=17*7 161=23*7 浜屻佽瀵熷垎缁 鍒嗚В鍚庯紝姣忎釜璐ㄥ洜鏁板嚭鐜扮殑娆℃暟涓2娆★紙鍙湁2鍑虹幇4娆★級銆傚厛瑙傚療52=13*2*2鍜68=17*2*2锛岃瀵熷緱鐭52...
绛旓細YJHV 3x185+95mm2 琛ㄧず浜よ仈鑱氫箼鐑粷缂樿仛姘ㄩ叝鎶ゅ鐨勯摐鑺數鍔涚數缂,3+1鑺,瀵间綋鎴潰绉650骞虫柟姣背 YJV 3x120+70mm2.琛ㄧず浜よ仈鑱氫箼鐑粷缂樿仛姘箼鐑姢濂楃殑閾滆姱鐢靛姏鐢电紗,3+1鑺,瀵间綋鎴潰绉430骞虫柟姣背 瑙勮寖瑙勫畾锛氱収鏄庣嚎璺殑闆剁嚎鎴潰绉繀椤讳笌鐩哥嚎鎴潰绉浉绛夛紙鍗4+1褰㈠紡锛夛紱鎺ュ湴绾挎埅闈㈢Н鏄浉绾跨殑涓鍗婏紙浣嗕笉寰...
