五年级口算
0.63二9= 1.8X0.4= 26.5二5=
0.75X4= 2.3X20= 0.8X0.21=
1.21二11= 8.5二1.7= 1.7X0.03=
0.23X3= 0.77二1.1= 0.36二4=
3一5= 6二5= 0.21X0.4=
0.01X0.1= 3.9二1.3= 0.45二0.45=
4二8= 67X色0.3= 0.08X12.5=
0.125X8= 3.1X0.3= 122二2=
1.5二6= 8二0.5= 0.4X2.5=
2.5X0.4= 0.92二0.4= 9.6二12=
提高练习
(14,18,24) = [14,18,24]=