岀20道简便方法的乘法算式。 给我出20道小数的乘法简便算法
\u5c8020\u9053\u4e58\u6cd5\u7b80\u4fbf\u8fd0\u7b97\u7684\u9898\u8ba1\u7b97\u4e0b\u9762\u5404\u9898(\u80fd\u7b80\u7b97\u7684\u8981\u7b80\u7b97)
7.05\u00d723.7+7.05\u00d776.3
0.125\u00d73.2\u00d72.5
12.81\uff0d(1.5+7.81)
8.7\u00d72.6+6.4\u00d78.7+8.7
1025\uff0d1125\u00f74.5\u00d73.6
12.25\uff0d3.1\uff0b0.85\uff0d6.178\u00d725\u00d71\uff0e25\u00d716
4\uff0e04\u00d7250
45\uff0e55\uff0d\uff086\uff0e82\uff0b15\uff0e55\uff09
3\uff0e2\u00d799\uff0b3\uff0e2 4.8\u00d739\uff0b61\u00d74\uff0e8 34\uff0e52\uff0d17\uff0e87\uff0d12\uff0e23
2\uff0e5\u00d756+4\uff0e5\u00d765 489\u00d7101\uff0d489 4\uff0e57+3\uff0e17+3\uff0e43+5\uff0e83
4\uff0e6\u00d756\uff0b48\u00d74\uff0e6\uff0d4\uff0e6\u00d74
\uff081.9\uff0d1.9\u00d70.9\uff09\u00f7\uff083.8\uff0d2.8\uff09
2.65\u00d71.7\uff0b1.35\u00d71.7
\u5c45\u7136\u8fd8\u8981\u8ba9\u522b\u4eba\u7ed9\u4f60\u51fa\u9898\uff0c\u5509\uff0c\u7ed9\u4f60\u51fa\u4e00\u9053\u5427\uff0c20\u9053\u592a\u591a\u4e86\u3002
\u8ba1\u7b97 1.48320482340238*2.84302480328423=
25×32×125 937×125×25×64×5
80×16×25×125 125×5×32×5 56×125
2、利用乘法分配律简算
46×101 17×999 125×98
37×99 234×102 (100－4)×25
3、逆用乘法分配律简算
95×71＋95×29 64×25＋35×25＋25
123×235－24×235＋235 586×124＋29×586－586×53
62×38＋38×38 54×154－45×54－54×9
67×12＋67×35＋67×52＋67
😊😁😼😻😸😸
绛旓細2銆佸埄鐢涔樻硶鍒嗛厤寰嬬畝绠 46脳101 17脳999 125脳98 37脳99 234脳102 (100锛4)脳25 3銆侀嗙敤涔樻硶鍒嗛厤寰嬬畝绠 95脳71锛95脳29 64脳25锛35脳25锛25 123脳235锛24脳235锛235 586脳124锛29脳586锛586脳53 62脳38锛38脳38 54脳154锛45脳54锛54脳9 67脳12锛67脳35锛67...
绛旓細姝ｇ‘鐨勭畻寮:117脳35=4095
绛旓細绗簩涓寜閽槸浼氭斁鍑鏆栨皵銆傚埌浜嗗啲澶╂垜鍜屽悓妗岀殑鎵嬩細鍗佸垎鍐板喎,浣滀笟灏变細鍋氱殑寰堟參銆傛墍浠ョ浜屼釜鎸夐挳浼氭斁鍑烘殩姘,鎶婃闈㈠拰鍚屾鐨勬闈㈠彉寰楀崄鍒嗙殑鏆栧拰銆傝繖鏍风殑璇濆啲澶╂垨鍐风殑澶╁氨涓嶄細鎬曞喎浜嗐 绗笁涓寜閽槸鏈鍘夊鐨,瀹冪瓑浜庝竴涓細绉诲姩鐨勭櫨绉戝叏涔︺傚璇枃鐨勨滃濞ュ鏈堚濇晠浜嬭缁欐垜鍚,濡傛挱鏀炬暟瀛涔樻硶绠楀紡绛夌瓑銆傛垜鐨勬垚缁╁氨浼氱獊...
