4.9乘1.02简便计算
4.9乘1.02简便计算 -
4.9×1.02 =（5-0.1）×1.02 =5×1.02-0.1×1.02 =5.1-0.102 =4.998
4.9×1.02 =（5－0.1）×（1+0.02）5×1+5×0.02－0.1×1－0.1×0.02 =5+0.1－0.1－0.002 =4.998
4.9×1.02 =（5-0.1）×1.02 =5×1.02-0.1×1.02 =5.1-0.102 =4.998
4.9×1.02 =（5－0.1）×（1+0.02）5×1+5×0.02－0.1×1－0.1×0.02 =5+0.1－0.1－0.002 =4.998
4.9×1.02简便计算：原式=4.9×（1+0.02）4.9+4.9×0.02 =4.9+0.098 =4.998
4.9*1.02 =4.9×（1+0.02）4.9×1+4.9×0.02 =4.9+0.098 =4.998
4.9×1.02简便计算? -
4.9×1.02简便计算解题思路：不能进行简便运算的按顺序计算，简便运算核心是运用加法和乘法各种定律进行计算，计算出整数部分方便后续计算的过程解题过程：4.9×1.02 =4.9×1+4.9×0.02 =4.9+0.098 =4.998 存疑请追问，满意请采纳还有呢？
原式=4.9×（1+0.02）4.9+4.9×0.02 =4.9+0.098 =4.998
简便方法计算各题 4.86×9.9 4.9×1.02 -
4.86×9.9 =4.86×(10-0.1)=4.86×10-4.86×0.1 =48.6-0.486 =48.114 4.9×1.02 =4.9×(1+0.02)=4.9×1+4.9×0.02 =4.9+0.098 =4.998
=4.8x(1+0.02)=4.8x1+4.8x0.02 =4.8+0.096 =4.896（乘法分配律）
4.54×1.02用简便方法计算? -
4.54×1.02用简便方法计算如下4.54×（1+0.02）＝4.54×1+4.54×0.02 ＝4.54+0.0908 ＝4.6308
您好：4.3*1.02 =4.3*（1+0.02）4.3*1+4.3*0.02 =4.3+0.086 =4.386 如有不明白，可以追问如有帮助，记得采纳，谢谢祝学习进步！