Bài 3 : Tính.
a ) 250 ml + 100 ml = ……… b ) 9 ml x 3 = …………
350 ml – 250 ml = ………… 27 ml : 3 = ……………
350 ml – 100 ml = ………… 27 ml : 9 = ……………
Bài Làm:
a ) 250 ml + 100 ml = 350 ml b ) 9 ml x 3 = 27 ml
350 ml – 250 ml = 100 ml 27 ml : 3 = 9 ml
350 ml – 100 ml = 250 ml 27 ml : 9 = 3 ml