4.4x9.8简便计算

穆惠竹9975.4*9.8怎么简便运算 -
阳疤冒18340353811 ______ 5.4*9.8 =5.4x(10-0.8) =54-4.32 =49.68

穆惠竹9970.45乘9.8怎样简便计算 -
阳疤冒18340353811 ______ 0.45x9.8 =0.45x(10-0.2) =0.45x10-0.45x0.2 =4.5-0.09 =4.41

穆惠竹9975·4x9·8的简便运算是同乘或同除一个相同的数吗? -
阳疤冒18340353811 ______ 5.4*9.8=54*98÷(10*10)=5292÷100=52.92

穆惠竹9974.9*9.8的简便运算 -
阳疤冒18340353811 ______ 4.9+0.8-4.9+0.8 =(4.9-4.9)+(0.8+0.8) =0+1.6 =1.6 朋友,请采纳正确答案,你们只提问,不采纳正确答案,回答都没有劲!!! 朋友,请【采纳答案】,您的采纳是我答题的动力,如果没有明白,请追问.谢谢.

穆惠竹997简便计算48.5 - 9.8 -
阳疤冒18340353811 ______ 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

穆惠竹9974.3*9.8简算 -
阳疤冒18340353811 ______ 4.3x9.8=4.3x(10-0.2)=4.3x10-4.3x0.2=43-0.86=42.14

穆惠竹9974.4x9.9+0.44= 如何简便计算 -
阳疤冒18340353811 ______ 4.4x9.9+0.44 =4.4x9.9+4.4*0.1 =4.4*(9.9+0.1) =4.4*10 =44

穆惠竹9970.98x5.6 9.8x4.4的简便方法 -
阳疤冒18340353811 ______ 【速算】0.98x5.6+ 9.8x4.4=0.98x(5.6+4.4)=0.98x10=9.8

穆惠竹997简便计算题 4.6*9.84.6*9.8简便计算 -
阳疤冒18340353811 ______[答案] 4.6*9.8 =4.6*(10-0.2) =4.6*10-4.6*0.2 =46-0.92 =45.08

穆惠竹9974.4X9.9简便计算 -
阳疤冒18340353811 ______[答案] 4.4X9.9 =4.4x(10-0.1) =4.4x10-4.4x0.1 =44-0.44 =43.56