1.số
4,56m3=..............dm3
2,5m3=...............dm3
7m3 5dm3=...........dm3
2dm3. 5cm3=...........dm3
6742cm3=............dm3
3cm3=..........dm3
2,46dm3=...........cm3
3,2dm3=............cm3
4dm3. 5cm3=.........dm3
5678cm3=........dm3
2.tính thuận tiện
a.0.25x611,7x40
b.6,28x18,24+18,24x3,72
c.36,4x99+36+0,4
d.5,92x46+53x5,92+5,92
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