Bai 1 :
b, 84 : 4 =21 96 : 3 = 32 98 : 3 = 32 (du 2)
68 : 2 = 34 48 : 2 = 24
Bai 2 :
2m 8dm = 208dm 2m 37cm = 237cm
5m 4dm = 504dm 7m 4cm = 704cm
2m 9dm = 208dm 4m 8cm = 408cm
8m 2cm = 802cm 3m 60cm = 360cm
Bai 3 :
3m 5cm < 3m 7cm 8dm 4cm < 8dm 12cm
4m 2dm > 3m 8dm 6m 50cm = 6m 5dm
3m 70dm > 10m 5dm 33cm > 5dm 2cm
Bai 4 :
x : 3 = 24 63 : x = 7 35 : x = 7 x x 4 = 48
x = 24 x 3 x = 63 : 7 x = 35 : 7 x = 48 : 4
x = 72 x = 9 x = 5 x = 12
Bai 5 :
a) Co tat ca 4 goc vuong
b) Cac ten goc vuong do la : lO ; OG ; HO ; OE
