Question

6.28×55+5.5×27.2+55计算过程？

Answer 1

六点28×55+5点5×27点2+55=6点28×55+55×2点72+55=55乘以括号六点28+2点72+1

Answer 2

6.28×55+5.5×27.2+55
＝6.28×55+55×2.72+55
＝(6.28+2.72+1)×55
＝9×55
＝10×55－55
＝550－55
＝495