由题意可得:0.51除2.2等于2.2/0.51=220/51=4.31 所以0,51除2.2等于4.31
0.51÷2.2=(0.51*100)÷(2.2*100)=51÷220=51/220
0.51÷2.2=51÷220=51/220
0.51÷2.2=0.23回答完毕~~
=51÷220=220分之51
0.51÷2.2=0.51/2.2=0.51*100/2.2*100=51/220 √
0.51除2.22.2/0.51=220/51≈4.31
0.51÷2.2=0.231818(18是循环节)是一个除不尽的小数此题没有简算哈
0.51÷2.2的算法最好是把被 除数和除数都化成整数,再运算.0.51÷2.2=51÷220=0.23181818.
可见余数又回到4,结果为无限循环小数:0.231818181818181818.