Đặt tính rồi tính
a/ 5,668 + 31,3 b/ 4,567 + 3,12 +2,06 c/ 205,71 - 68,56
.................................................................................................................................................
.................................................................................................................................................
.................................................................................................................................................
.................................................................................................................................................
c/ 31,3 x 2,7 d/ 135,78 : 7,3 e/125,76 : 1,6
.................................................................................................................................................
.................................................................................................................................................
.................................................................................................................................................
.................................................................................................................................................
...............................................................................................................................................