1)Viết số thích hợp vào chỗ chấm:
a)7,306=............m.............dm..............mm 2,586km=................km.................m
=............m.............cm...............mm ...................m
=.............m..............mm 8,2km=.................km...................m
=......................mm =...................m
b)1kg 275g=..................kg 3kg45g=..................kg 12kg5g=.........................kg
6528g=...................kg 789g=...................kg 64g=.............................kg
7tan 125kg=......................tấn 2tan 64kg=...................tấn 177kg=....................tan
1tan 3ta=....................tận 4 tạ=.............................tấn 4 yen=........................tan
c)8,56dm2=...................cm2 0,42m2=..........................dm2 2,5km2=......................m2
1,8ha=.......................m2 0,001ha=......................m2 80dm2=.....................m2
6,9m2=..............m2....................dm2 2,7dm2=.............dm2.............cm2 0,03ha=......................m2
