在一个减法算式中,被减数、减数、差相加的和是178,被减数是几?如果减数是23,差是多少? 在一个减法算式中,被减数,减数和差相加的和是18。被减数是(...
\u5728\u4e00\u4e2a\u51cf\u6cd5\u7b97\u5f0f\u4e2d\uff0c\u88ab\u51cf\u6570\u51cf\u6570\uff0c\u5dee\u76f8\u52a0\u7684\u548c\u662f178\uff0c\u88ab\u51cf\u6570\u662f\u591a\u5c11\uff1f\u5982\u679c\u51cf\u6570\u662f23\uff0c\u5dee\u662f\u591a\u5c11\uff1f\u7b97\u5f0f\u89e3\uff1a\u5df2\u77e5\u5728\u4e00\u4e2a\u51cf\u6cd5\u7b97\u5f0f\u4e2d\uff0c\u88ab\u51cf\u6570\uff0c\u51cf\u6570\uff0c\u5dee\u76f8\u52a0\u7684\u548c\u662f178\uff0c
\u5f97\u88ab\u51cf\u6570+\u51cf\u6570+\u5dee=178
\u4e14\u88ab\u51cf\u6570-\u51cf\u6570=\u5dee\uff0c
\u5f97\u88ab\u51cf\u6570=\u51cf\u6570+\u5dee
\u5f97\u88ab\u51cf\u6570+\u88ab\u51cf\u6570=178
\u88ab\u51cf\u6570\u00d72=178
\u88ab\u51cf\u6570=178\u00f72
\u88ab\u51cf\u6570=89
\u4e14\u51cf\u6570\u662f23\uff0c
\u5f97\u5dee=\u88ab\u51cf\u6570-\u51cf\u6570
=89-23
=66
\u7b54\uff1a\u88ab\u51cf\u6570\u662f89\uff0c\u5dee\u662f66.
\u88ab\u51cf\u6570\u662f9\uff0c\u51cf\u6570\u662f4\uff0c\u5dee\u662f5\u3002
\u51cf\u6cd5\u7684\u8fd0\u7b97\u5b9a\u5f8b\uff1a\u51cf\u6cd5\u7ed3\u5408\u4f93\uff1a\u4e00\u4e2a\u6570\u8fde\u7eed\u51cf\u53bb\u4e24\u4e2a\u6570\uff0c\u53ef\u4ee5\u5148\u628a\u540e\u4e24\u4e2a\u6570\u76f8\u52a0\uff0c\u518d\u76f8\u51cf\uff0c\u516c\u5f0f\uff1aa-b-c=a-(b+c)
\u4f8b\uff1a12-1-3=12-(1+3)
\u4e00\u3001\u51cf\u6cd5\u7684\u610f\u4e49\uff1a\u4ece\u4e00\u4e2a\u6570\u91cf\u4e2d\u51cf\u53bb\u53e6\u4e00\u4e2a\u6570\u91cf\u7684\u8fd0\u7b97\u53eb\u505a\u51cf\u6cd5\u3002
\u4e8c\u3001\u51cf\u6cd5\u7684\u6027\u8d28\uff1a
1\u3001\u51cf\u53bb\u4e00\u4e2a\u6570\uff0c\u7b49\u4e8e\u52a0\u8fd9\u4e2a\u6570\u7684\u76f8\u53cd\u6570\u3002a-b=a+(-b)
2\u3001\u51cf\u53bb\u4e00\u4e2a\u6570\u518d\u52a0\u4e0a\u4e00\u4e2a\u6570\uff0c\u7b49\u4e8e\u51cf\u53bb\u8fd9\u4e24\u4e2a\u6570\u7684\u5dee\u3002a-b+c=a-(b-c)
\u6269\u5c55\u8d44\u6599
\u51cf\u6cd5\u6709\u5982\u4e0b\u8fd0\u7b97\u6027\u8d28\uff1a
1\uff0e\u67d0\u6570\u51cf\u53bb\u4e00\u4e2a\u6570\uff0c\u518d\u52a0\u4e0a\u540c\u4e00\u4e2a\u6570\uff0c\u67d0\u6570\u4e0d\u53d8\uff0e\u5373\uff08a\uff0db\uff09+b=a
2\uff0e\u67d0\u6570\u52a0\u4e0a\u4e00\u4e2a\u6570\uff0c\u518d\u51cf\u53bb\u540c\u4e00\u4e2a\u6570\uff0c\u67d0\u6570\u4e0d\u53d8\uff0c\u5373\uff08a + b\uff09\uff0db=a
3\uff0en\u4e2a\u6570\u7684\u548c\u51cf\u53bb\u4e00\u4e2a\u6570\uff0c\u53ef\u4ee5\u4ece\u4efb\u4f55\u4e00\u4e2a\u52a0\u6570\u91cc\u51cf\u53bb\u8fd9\u4e2a\u6570\uff08\u5728\u80fd\u51cf\u7684\u60c5\u51b5\u4e0b\uff09\uff0c\u518d\u540c\u5176\u4f59\u7684\u52a0\u6570\u76f8\u52a0\uff0c\u5982\uff08a+b+c\uff09\uff0dd=\uff08a\uff0dd\uff09+b+c\uff0e
4\uff0e\u4e00\u4e2a\u6570\u51cf\u53bbn\u4e2a\u6570\u7684\u548c\uff0c\u53ef\u4ee5\u4ece\u8fd9\u4e2a\u6570\u91cc\u4f9d\u6b21\u51cf\u53bb\u548c\u91cc\u7684\u6bcf\u4e2a\u52a0\u6570\uff0c\u5982a\uff0d\uff08b+c+d\uff09=a\uff0db\uff0dc\uff0dd
5\uff0e\u4e00\u4e2a\u6570\u51cf\u53bb\u4e24\u4e2a\u6570\u7684\u5dee\uff0c\u53ef\u4ee5\u4ece\u8fd9\u4e2a\u6570\u91cc\u51cf\u53bb\u5dee\u91cc\u7684\u88ab\u51cf\u6570\uff08\u5728\u80fd\u51cf\u7684\u60c5\u51b5\u4e0b\uff09\uff0c\u518d\u52a0\u4e0a\u5dee\u91cc\u7684\u51cf\u6570\uff1b\u6216\u8005\u5148\u52a0\u4e0a\u5dee\u91cc\u7684\u51cf\u6570\uff0c\u518d\u51cf\u53bb\u5dee\u91cc\u7684\u88ab\u51cf\u6570\uff0c\u5373a\uff0d\uff08b\uff0dc\uff09=a\uff0db+c\u6216\u8005a\uff0d\uff08b\uff0dc\uff09=a+c\uff0db
89,66
绛旓細璁琚噺鏁涓 a锛屽噺鏁涓 b锛屽垯宸负 a - b銆傛牴鎹鎰忥紝鍙互鍒楀嚭浠ヤ笅涓や釜鏂圭▼寮忥細a + b + (a - b) = 976 锛堣鍑忔暟銆佸噺鏁板拰宸殑鍜屾槸 976锛塧 - b = 3b 锛堝樊鏄噺鏁扮殑 3 鍊嶏級灏嗙浜屼釜鏂圭▼寮忎腑鐨 a - b 鏇挎崲鍒扮涓涓鏂圭▼寮涓紝寰楀埌锛歛 + b + 3b = 976 鍖栫畝鍙緱锛歛 + 4b = 976...
绛旓細涓涓噺娉曠畻寮,琚噺鏁,鍑忔暟,宸殑鍜屾槸216,琚噺鏁版槸108.杩欐槸瀵圭殑銆傚凡鐭鍦ㄤ竴涓噺娉曠畻寮忎腑锛岃鍑忔暟+鍑忔暟+宸=216锛屼笖琚噺鏁-鍑忔暟=宸紝寰楄鍑忔暟=鍑忔暟+宸紝鍒欒鍑忔暟+琚噺鏁=216 2脳琚噺鏁=216 琚噺鏁=216梅2 琚噺鏁=108
绛旓細鍦鍑忔硶绠楀紡涓紝鍑忓彿鍓嶉潰鐨勬暟鏄琚噺鏁帮紝鍑忓彿鍚庨潰鐨勬暟鏄噺鏁帮紝绛夊彿鍚庨潰鐨勬暟鏄樊銆傞涓粨鏋滀负300锛屽亣璁捐鍑忔暟涓篴锛屽噺鏁涓篵锛屽樊涓篴-b銆傞偅涔堝畠浠殑鍜屼负a+b+锛坅-b锛=600锛岃В寰梐绛変簬300銆傚噺娉曟槸鍥涘垯杩愮畻涔嬩竴锛屽皢涓涓鏁版垨閲忎粠鍙︿竴涓暟鎴栭噺涓噺鍘荤殑杩愮畻鍙仛鍑忔硶銆傝鍑忔暟灏辨槸锛氳鍑忓幓鐨勯偅涓暟銆 灏嗕竴涓...
绛旓細2涓琚噺鏁鐨勫拰鏄8.1 琚噺鏁:8.1梅2=4.05 璁捐鍑忔暟銆佸噺鏁板拰宸緷娆′负X銆乊銆乑锛屽垯鏈夛細X-Y=Z锛孹+Y+Z=8.1锛屽彲寰楋細X=Y+Z锛2X=8.1锛孹=4.05锛涙墍浠ユ眰鍑鸿鍑忔暟涓4.05銆傚畾涔 鍔犳硶锛氭妸涓や釜鏁板悎骞舵垚涓涓鏁扮殑杩愮畻銆鍑忔硶锛氬湪宸茬煡涓や釜鍔犳暟鐨勫拰涓庡叾涓殑涓涓姞鏁帮紝姹傚彟涓涓姞鏁扮殑杩愮畻銆備箻娉曪細...
绛旓細涓涓涓噺娉曠畻寮忎腑锛岃鍑忔暟銆佸噺鏁颁笌宸3涓暟鐨勬诲拰鏄84 寰楄鍑忔暟+鍑忔暟+宸=84 琚噺鏁+琚噺鏁=84 琚噺鏁懊2=84 琚噺鏁=84梅2 琚噺鏁=42 鍑忔硶鍏紡 1銆佽鍑忔暟-鍑忔暟=宸 2銆佸樊+鍑忔暟=琚噺鏁 3銆佽鍑忔暟-宸=鍑忔暟 鍑忔硶鐩稿叧鎬ц川 1銆佸弽浜ゆ崲鐜囷細鍑忔硶鏄弽浜ゆ崲鐨勶紝濡傛灉a鍜宐鏄换鎰忎袱涓暟瀛楋紝閭d箞 锛坅-b)=-(...
绛旓細鍦ㄤ竴涓噺娉曠畻寮忛噷琚噺鏁板噺鏁涓庡樊鐨勫拰鏄20琚噺鏁版槸10銆傚叿浣撹В閲婂涓嬶細1銆佽繖鏄竴涓叧浜庡噺娉曠殑闂銆傛垜浠煡閬擄紝鍑忔硶鏈夎鍑忔暟銆佸噺鏁板拰宸笁涓儴鍒嗐傞鐩憡璇夋垜浠紝杩欎笁鑰呯殑鍜屾槸20銆傛垜浠殑鐩爣鏄壘鍑鸿鍑忔暟鏄灏戙傚亣璁捐鍑忔暟鏄痑锛屽噺鏁鏄痓锛岄偅涔堝樊灏辨槸a-b銆2銆佹牴鎹鐩紝鎴戜滑鍙互寰楀埌浠ヤ笅鏂圭▼锛宎+b+a-b=20...
绛旓細A-B=41...鈶 鈶+鈶★紝寰 A+B+A-B=117+41 2A=158锛孉=79 鎶夾=79浠e叆A-B=41锛屽緱锛孊=79-41锛孊=38 琚噺鏁-鍑忔暟=宸 A-B=C 79-38=41 鍑忔硶鐨勭煡璇嗕粙缁嶏細鍑忔硶鐨勫叕寮忥細琚噺鏁-鍑忔暟=宸 宸+鍑忔暟=琚噺鏁 琚噺鏁-宸=鍑忔暟銆傚噺娉曟槸鍥涘垯杩愮畻涔嬩竴锛屼粠涓涓鏁颁腑鍑忓幓鍙︿竴涓暟鐨勮繍绠楀彨鍋氬噺娉曪紱宸茬煡...
绛旓細琚噺鏁帮紞鍑忔暟=宸锛岃鍑忔暟=宸+鍑忔暟銆傞涓: 宸=12.3锛岃鍑忔暟+鍑忔暟+宸=38锛屾墍浠ワ紝琚噺鏁帮紞鍑忔暟=12.3锛屸憼 琚噺鏁+鍑忔暟=25.7锛屸憽 鈶+鈶★紝琚噺鏁=19 鈶★紞鈶锛屽噺鏁=6.7
绛旓細500銆傝В鏋愶細姝ら鍙互鍒╃敤鍔犲噺娑堝厓娉锛屽噺鏁甯﹀叆鍒拌鍑忔暟+鍑忔暟+宸=1000绠楀紡鍐杩愮畻銆傜敱棰樻剰寰楋細琚噺鏁+鍑忔暟+宸=1000 鍙堝洜涓猴細鍑忔暟=琚噺鏁-宸 閭d箞锛氳鍑忔暟+锛堣鍑忔暟-宸級+宸=1000 鍒欙細琚噺鏁+琚噺鏁=1000 鎵浠锛岃鍑忔暟=500 鍔犲噺娑堝厓娉曠殑姝ラ锛1銆佸埄鐢ㄧ瓑寮忕殑鍩烘湰鎬ц川锛屽皢鍘熸柟绋嬬粍涓煇涓湭鐭ユ暟鐨勭郴鏁...
绛旓細鈭琚噺鏁锛嶅噺鏁=宸 鈭磋鍑忔暟+鍑忔暟+宸=2脳琚噺鏁=502 鈭磋鍑忔暟=251 鈭村噺鏁板崄宸=251 鈭靛噺鏁颁竴宸=21 鈭村噺鏁=锛251+21锛壝2=272梅2=136 绛旀閫塁136