2.54+0.99脱式怎么算？ 9.9×9.9+0.99的 脱式简便计算
1.8\u00d70.99\u7528\u8131\u5f0f\u8ba1\u7b97\u600e\u4e48\u7b971.8\u00d70.99
=1.8✘\uff081-0.01\uff09
=1.8✘1-1.8✘0.01
=1.8-0.018
=1.782
=9.9\u00d79.9+9.9\u00d70.1
=9.9\u00d7\uff089.9+0.1\uff09
=9.9\u00d710
=99
你好，很高兴回答你的问题。
这道算术题的最后结果为3.53，具体步骤如下图片所示：
希望被您的采纳，谢谢。
注意小数相加时要对齐小数点。
脱式计算
＝2.53+0.01+0.99
＝2.53+1=3.53
2.54+0.99和是三点五三。
2.54+0.99
=2.54+（1-0.01）
=2.54+1-0.01
=3.54-0.01
=3.53
用凑整法计算
2.54+0.99
＝2.54+1-0.01
＝3.54-0.01
＝3.53
绛旓細20-3.65+2.54 =16.35+2.54 =18.89
绛旓細=锛2.54+9.46锛+锛9.16-8.16锛=12+1 =13 濡傛灉浣犲鎴戠殑鍥炵瓟婊℃剰锛岃銆愰噰绾充负婊℃剰绛旀銆戯紝鑻ユ湁鐤戦棶锛屽彲缁х画璇㈤棶锛岀洿鑷冲紕鎳傦紒
绛旓細瑙:鏍规嵁棰樼洰鐗圭偣锛岀敤绠渚挎柟娉璁＄畻锛屽彲灏嗚兘鍑戞暣鏁扮殑涓ょ粍灏忔暟鍒嗗埆缁勫悎鍦ㄤ竴璧疯绠楀嵆鍙:6.7鍗2.54鍗7.46涓1.7 =(6.7涓1.7)鍗(2.54鍗7.46)=5鍗10 =15
绛旓細6.345脳2.54+6.45脳6.345+6.35 =6.345脳锛2.54+6.45+1)-0.005 =6.345脳9.99-0.005 =6.345脳1-6.345脳0.01-0.005 =6.345-0.06845 =6.345-0.1+0.03155 =6.27655
绛旓細=锛2.54+9.46锛+锛9.16-8.16锛=12+1=13
绛旓細=锛2.54+9.46锛+锛9.16-8.16锛=12+1 =13 濡傛灉浣犲鎴戠殑鍥炵瓟婊℃剰,璇枫愰噰绾充负婊℃剰绛旀銆,鍙户缁闂,鐩磋嚦寮勬噦!
绛旓細=锛2.54+9.46锛+锛9.16-8.16锛=12+1 =13 濡傛灉浣犲鎴戠殑鍥炵瓟婊℃剰,璇枫愰噰绾充负婊℃剰绛旀銆,鍙户缁闂,鐩磋嚦寮勬噦!
绛旓細绠渚胯绠17.8-(7.46-2.8)-2.54 瑙ｉ鎬濊矾锛氫笉鑳借繘琛岀畝渚胯繍绠楃殑鎸夐『搴忚绠楋紝绠渚胯繍绠楁牳蹇冩槸杩愮敤鍔犳硶鍜屼箻娉曞悇绉嶅畾寰嬭繘琛岃绠楋紝璁＄畻鍑烘暣鏁伴儴鍒嗘柟渚垮悗缁璁＄畻鐨杩囩▼ 瑙ｉ杩囩▼锛17.8-(7.46-2.8)-2.54 =17.8+2.8-锛2.54+7.46锛=20.6-10 =10.6 瀛樼枒璇疯拷闂紝婊℃剰璇烽噰绾 ...
绛旓細25.4*44+2.54*5.5+25.4 =25.4*44+25.4*0.55+25.4*1 =25.4*(44+0.55+1)=25.4*45.55 =1156.97 鎰熻棰樼洰鍙兘閿欎簡锛屾槸涓嶆槸搴旇杩欐牱锛25.4涔44鍔2.54涔550鍔25.4鎬庝箞绠 25.4*44+2.54*550+25.4 =25.4*(44+55+1)=2540 ...
绛旓細2.54脳1.7锛0.7脳25.4 绗簩涓紡瀛愯浆鎹㈡垚7脳2.54=2.54脳1.7鈥7脳2.54=2.54脳锛1.7鈥7锛 鎻愬彇鍏遍」2.54=2.54脳 (鈥5.3)=鈥13.462楠岀畻瑙佹埅鍥
