15dm2 bằng bao nhiêu cm2
Bài 1: Viết số thích họp vào số trống a) 15dm2=...cm2 40dm2=...cm2 3dm2 12cm2=...cm2 b) 2300cm2=...dm2 50000cm2=...dm2 1230cm2=...dm2...cm2 c)21m2=...dm2 2010m2=...dm2 3m2 20dm2=...dm2 d)2000dm2=...m2 10500dm2=...m2 4560dm2...m2...dm2 Bài 2: Điền dấu ( < > =) a)5dm2 7cm2...57cm2 5dm2 7cm2...507cm2 5dm2 7cm2...570cm2 b)2m2 5cm2...2050cm2 2m2 5cm2...20005cm2 2m2 5cm2...20050cm2 Bài 1: $a) 15dm^2=1500cm^2$ $40dm^2=4000cm^2 $ $3dm^2 12cm^2=312cm^2$ $b) 2300cm^2=23dm^2$ $50000cm^2=500dm^2$ $1230cm^2=12dm^230cm^2$ $c)21m^2=2100dm^2$ $2010m^2=201000dm^2$ 3m^2 20dm^2=3020dm^2 $d)2000dm^2=20m^2$ $10500dm^2=105m^2$ $4560dm^245m^260dm^2$ . Bài 2: $a)5dm^2 7cm^2 > 57cm^2$ $5dm^2 7cm^2 = 507cm^2$ $5dm^2 7cm^2 < 570cm^2$ $b)2m^2 5cm^2 < 2050cm^2$ $2m^2 5cm^2 < 20005cm^2$ $2m^2 5cm^2 < 20050cm^2$ |