5 cm × 5 = . . . . . . .3 dm × 8 = . . . . . . .2 kg × 7 = . . . . . . .10 cm : 2 = . . . . . .35 mm : 5 = . . . . . .21 l : 3 = . . . . . .5 kg × 7 = . . . . . . .3 l × 9 = . . . . . . .18 k
Giải thích
5 cm × 5 = 25 cm 3 dm × 8 = 24 dm 2 kg × 7 = 14 kg | 10 cm : 2 = 5 cm 35 mm : 5 = 7 mm 21 l : 3 = 7 l | 5 kg × 7 = 35 kg 3 l × 9 = 27 l 18 kg : 3 = 6 kg |