Toán Lớp 5: 3m7dm = m 9dm4cm = dm 5km20m = km 515cm = m 2dm8mm = dm 12dam2 30m2 = da

Question

Toán Lớp 5:  3m7dm =          m 9dm4cm =         dm 5km20m =             km 515cm =               m 2dm8mm =            dm 12dam2 30m2 =          dam2 5km2 155dam2 =            km2 8m2 7dm2 =              m2 78dm2 7dm2 =             m2 6m2 5cm2 =              m2

truongankimtrong · Answer

Giải đáp:       Lời giải và giải thích chi tiết:    3m7dm=3,7m   9dm4cm=9,4dm   5km20m=5,002km   515cm=5,15m   2dm8mm=2,08dm   12dam2 30m2=2,3dam2   5km2 155dam2=5,155km2   8m2 7dm2=8,07m2   78dm2 7dm2=85dm2   6m2 5cm2=6,0005m2

cattien · Answer

$ text{3m 7dm = 3m + 0,7m = 3,7m}$   $ text{9dm 4cm = 9dm + 0,4dm = 9,4dm}$   $ text{5km 20m = 5km + 0,020km = 5,020km}$   $ text{515cm = 5,15m}$   $ text{2dm 8mm = 2dm + 0,08dm = 2,08dm}$   $ text{12dam&sup2; 30m&sup2; = 12dam&sup2; + 0,030dam&sup2; = 12,030dam&sup2;}$   $ text{5km&sup2; 155dam&sup2; = 5km&sup2; + 0,0155km&sup2; = 5,0155km&sup2;}$   $ text{8m&sup2; 7dm&sup2; = 8m&sup2; + 0,07m&sup2; = 8,07m&sup2;}$   $ text{78dm&sup2; 5cm&sup2; = 0,78m&sup2; + 0,0005m&sup2; = 0,7805m&sup2;}$   $ text{6m&sup2; 5cm&sup2; = 6m&sup2; + 0,0005m&sup2; = 6,0005m&sup2;}$