37-9可以先算()再算()
37.9\u5ea6\u7b97\u53d1\u70e7\u5417\u7b97\u662f\u4f4e\u70e7\u3002\u8981\u591a\u559d\u6c34\uff0c\u534a\u5c0f\u65f6\u540e\u518d\u6d4b\u4e00\u4e0b\u3002
\u4eba\u7684\u6b63\u5e38\u4f53\u6e29\u4e00\u822c\u572836\u00b0\uff5e37\u00b0\u5de6\u53f3\uff0c\u4e0d\u540c\u7684\u4eba\u57fa\u7840\u4f53\u6e29\u4e5f\u4e0d\u4e00\u6837\uff0c\u6709\u4eba\u504f\u9ad8\u6709\u4eba\u504f\u4f4e\uff0c\u5973\u6027\u666e\u904d\u6bd4\u7537\u6027\u4f4e\uff0c\u4e00\u822c\u5982\u679c\u6ca1\u6709\u5176\u5b83\u4e0d\u9002\u75c7\u72b6\u90fd\u5e94\u5c5e\u6b63\u5e38\u3002\u666e\u904d\u6765\u8bf4\uff08\u814b\u7a9d\uff09\uff0c37.4\uff5e38\u5ea6\u662f\u4f4e\u70e7\uff0c38\uff5e39\u5ea6\u662f\u4e2d\u5ea6\u53d1\u70e7\uff0c39\uff5e41\u5ea6\u662f\u9ad8\u70e7\uff0c41\u5ea6\u4ee5\u4e0a\u4e3a\u8d85\u9ad8\u70e7,\u5c31\u6709\u5371\u9669\u4e86~
先算-，再算差
30减9
30-9
37-10=27 27+1=28
绛旓細鍏堢畻-锛鍐嶇畻宸
绛旓細37-9 = 28
绛旓細37-9鍏堢畻鍑忓啀绠楀噺37鍒嗘垚鍑犲拰鍑犺В鐮佺畻娉曟湁:瑙ｆ硶涓:37=20+17 17-9=8 20+8=28 瑙ｆ硶浜:37=27+10 10-9=1 27+1=28
绛旓細鎵浠37-9=37-锛10-1锛=37-10+1=27+1=28
绛旓細鍙ｇ畻37-9鍏堢畻璋佸湪绠楄皝 鍙ｇ畻37-9鍏堢畻璋佸湪绠楄皝 瑙ｏ細 37-9 =37-7-2 =30-2 =28 37 4=41鍏堢畻,鍐嶇畻灏忓涓骞寸骇鐨 鍛冨憙锛屼綘鎵撻敊浜嗗惂 86+7=93 鎯筹細鍏堢畻锛堬級鍔狅紙锛 鍐嶇畻锛堬級鍔狅紙锛 73+20=93 鎯筹細鍏堢畻锛堬級鍔狅紙锛 鍏堢畻 锛堬級鍔狅紙锛 杩欐槸涓骞寸骇鐨 1锛屽厛绠6+7=13锛...
绛旓細绛変簬39锛屾湁鎷彿鐨勮瘽鍏堣绠楁嫭鍙閲岀殑鏈夋嫭鍙锋椂锛鍏堢畻鎷彿閲岄潰鐨勶紝鍐嶇畻鎷彿澶栭潰鐨勩傚湪娣峰悎杩愮畻涓紝鍏堢畻鎷彿鍐呯殑鏁帮紝鎷彿浠庡皬鍒板ぇ锛屽鏈変箻鏂瑰厛绠椾箻鏂癸紝鐒跺悗浠庨珮绾у埌浣庣骇銆傚姞娉曘佸噺娉曘佷箻娉曘侀櫎娉曪紝缁熺О涓哄洓鍒欒繍绠椼傚叾涓紝鍔犳硶鍜屽噺娉曞彨鍋氱涓绾ц繍绠楋紱涔樻硶鍜岄櫎娉曞彨鍋氱浜岀骇杩愮畻銆傚湪鍚湁鎷彿鐨勭畻寮忛噷锛岃鍏堢畻...
绛旓細瑙ｏ細杩欎釜鍏堢畻锛17-8=9 鍐嶇畻37-17=20 鏈鍚庣畻20+9=29 缁煎悎绠楀紡锛37-8=29
绛旓細搴旇鍏堢畻鎷彿閲岄潰鐨 濡傛灉瑕佸厛鍘绘嫭鍙蜂篃琛岋紝浣嗘槸闇瑕佸彉鍙凤紝璁＄畻涔熺畻鏄浉瀵圭畝鍗曚簺鍚э紝鍘绘帀鎷彿鍚庡師寮忓彉涓98-37+9
绛旓細璁＄畻32-9鏃讹紝鍙互鍏堢畻32鍑10绛変簬22锛鍐嶇畻22鍔1绛変簬23銆32-9=32-10+1=22+1=23 鎴栬 32-9=30-9+2=21+2=23
绛旓細鍔犲噺娉曟贩鍚堣繍绠楄鍒:濡傛灉鍙湁鍔犲噺娉鍏堢畻鎷彿閲岄潰鐨,鍐嶇畻鎷彿澶栭潰鐨;骞崇骇杩愮畻,浠庡乏鍒板彸銆 鍏蜂綋鐨100浠ュ唴娣峰悎鍔犲噺娉曠畻寮忓涓嬪浘(浠呬緵鍙傝): 姹傚嚭鐧鹃亾涓鐧句互鍐呯殑鍔犲噺绠楀紡 鎬诲叡鏈100閬撶畻寮,鍖呮嫭65鍔犱笂37绛変簬銆 61鍔犱笂29绛変簬 銆63鍔犱笂26绛変簬 銆83鍔犱笂17绛変簬 銆57鍔犱笂10绛変簬 銆3鍔犱笂50绛変簬銆 7鍔犱笂12绛変簬銆 ...
