27L - 19L =... 42CM - 5CM = ... 32KG - 17KG =...34L + 26L =... 29CM...

Bài 2: Tính?27l - 19l =... 42cm - 5cm = ... 32kg - 17kg =...34l + 26l =... 29cm + 13cm = ... 83kg - 56kg =...43l - 3l - 17l =... 23dm - 9cd = ... 27kg + 15kg =...54l - 16l =... 56dm - 17dm = ... 16kg - 9kg =...