三个皮球共27元,王老师拿153元,可以买多少个皮球？ 三年级数学计算题李老师买了一个足球和3 个皮球,共花了84元...
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X+3Y=84\uff0cX+Y=60
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\u6240\u4ee5\u7b49\u4e8e:84-2Y=60, 24=2Y, Y=12,
\u5e26\u5165\uff1aX+Y\uff1d60\uff0cX+12=60\uff0cX=48
\u89e3\u5f97\uff1aX=48\uff0cY=12
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绛旓細153/锛27/3锛=153/9=17
绛旓細153梅锛27梅3锛=17涓毊鐞
绛旓細涓変釜鎺掔悆涓鍏27鍧锛岄偅涔堜竴涓帓鐞冩槸9鍏冿紝200鍧楁渶澶氬彲浠ヤ拱22涓紝涓鍏遍渶瑕佷粯娆198鍧椼
绛旓細鏍规嵁浣犺鐨勫簲璇ユ槸鍙兘涓変釜涓涔颁笉鑳藉垎寮锛岄偅涔堜笁涓竴缁 鍙互涔180/27缁勶紝180/27=6.667缁 閭ｄ箞鍙兘涔6缁勶紝鍥犱负绗竷缁勯挶涓嶅鎵浠ュ彲浠ヤ拱6*3=18涓僵鐞 濡傛灉涓嶆槸涓缁勭粍鍗栵紝閭ｄ箞灏辨槸27/3=9 姣忎釜鐞9鍏 180/9=20涓僵鐞 浣犺嚜宸辨牴鎹鐩剰鎬濋夊惂锛屾垜浼拌浣犻鐩病璇村畬鏁 ...
绛旓細鏁伴噺涓嶅悓銆佺悆绫讳笉鍚屻1銆佹暟閲忎笉鍚岋細涓涓槸15鍙紝涓涓槸20鍙2銆佺绫讳笉鍚岋細涓涓槸鐨悆锛屼竴涓槸鎺掔悆銆傜毊鐞冮氬父鏄敱鐨潻鎴栧悎鎴愭潗鏂欏埗鎴愶紝閫氬父鐢ㄤ簬瓒崇悆銆佺鐞冦佹﹦姒勭悆绛夎繍鍔ㄣ
绛旓細27梅3锛9鍏 144梅9锛16涓 绛旓細鍙互涔16涓僵鐞冦
绛旓細3*9=27(涓級锛屽彲浠ヤ拱27涓皬鐨悆
绛旓細瑙ｏ細鐜嬭佸笀浠50鍏冧拱涓変釜鐨悆锛屾壘鍥8鍏冿紝閭ｄ箞鐜嬭佸笀涔扮毊鐞冨疄闄呯敤浜42鍏冿紝鍒楀紡濡備笅锛50-8=42銆佺瓟锛氱帇鑰佸笀涔扮毊鐞冪敤浜42鍏冦
绛旓細鐜嬭佸笀涔颁簡涓変釜鐨悆鍒嗗埆鏄118鍏156鍏94鍏冿紝浠栨渶澶氳繕鍓╁灏戝厓涓32鍏冿紝浠栨渶灏戣繕鍓╁灏戝厓涓0鍏冦傝绠楄繃绋嬪涓嬶細118 + 156 + 94 = 368锛368 - 300 = 68锛68 - 36 = 32銆
绛旓細杩欐槸娑夊強鍒版暟瀛︼紝涔橀櫎娉曠殑璁＄畻鍜屽簲鐢紝鎵浠ユ牴鎹鐩姹锛岀帇鑰佸笀涔涓変釜鐨悆锛屾瘡涓涓叓鍏冿紝閭ｄ箞涓鍏变娇鐢ㄧ殑浠锋牸锛屽簲璇ヤ负3脳8=24鍏冿紝鎵浠ユ暟瀛︾殑璁＄畻涓瀹氳鍏呭垎浜嗚В棰樼洰鐨勮姹傦紝骞朵娇鐢ㄦ纭绠楁柟娉曞拰瑙勫緥锛岃绠楃粨鏋滄墠浼氬噯纭
