4,6=...............cm 

45,59=...........cm

4,4g=................g

5,426km2=...................dam2

54,26ha=......................dam2

2,556km2=...............dam2

2km2 556dam2=...................dam2

11/2 + 17/5 + 9/5

=55/10 + 34/10 + 18/10

=101/10

tính nhanh

78 x 256 + 256 : 1/4 + 128 x 36

780kg=................tạ............tấn

78kg=..............tạ................tấn