5.5x9.8简便计算

酆阅废4505五年级上册数学5.5x9.8的简单计算方法 -
伏享洪15726499975 ______ 5.5x(10-0.2)=55-1.1=53.9

酆阅废45055.5乘9.8用简便方法计算 -
伏享洪15726499975 ______ 5.5*(10-0.2)=5.5*10-5.5*0.2=55-1.1=53.9

酆阅废45050.76*9.8简便运算怎么做? -
伏享洪15726499975 ______ 0.76*9.8简便计算 解:原式=0.76*(10-0.2) =0.76*10-0.76*0.2 =7.6-0.152 =7.448 分析: 运用乘法分配律计算.

酆阅废45059.8*25简便运算 -
伏享洪15726499975 ______ 9.8*25简便运算 =(10-0.2)x25 =10x25-0.2x25 =250+5 =255

酆阅废45055.4*9.8怎么简便运算 -
伏享洪15726499975 ______[答案] 5.4*9.8 =5.4x(10-0.8) =54-4.32 =49.68

酆阅废45059.8*3.6怎么简算9.8*3.6和7.5*1.9*0.4怎么简算??? -
伏享洪15726499975 ______[答案] 9.8*3.6 =(10-0.2)*3.6 =36-0.72 =35.28

酆阅废4505计算,能简算的简算.5.5x17.3+6.7x5.5和9.07 - 22.78÷3.4 -
伏享洪15726499975 ______[答案] 132 和2.37

酆阅废4505简便计算题 4.6*9.84.6*9.8简便计算 -
伏享洪15726499975 ______[答案] 4.6*9.8 =4.6*(10-0.2) =4.6*10-4.6*0.2 =46-0.92 =45.08

酆阅废4505简便计算48.5 - 9.8 -
伏享洪15726499975 ______ 简便计算48.5-9.8 解:根据凑整法的运用,原式=48.5-(10-0.2)=48.5-10+0.2=38.5+0.2=38.7

酆阅废4505(38.6 - 12.95)*9.8简便运算 -
伏享洪15726499975 ______ 199.3 解析: (38.6-12.95)*9.8 =(38.65-13)*9.8 =25.65*9.8 =25.65*(10-0.2) =256.5-51.3 =200.6-1.3 =200.3-1 =199.3