Question

快速心算。 3.07+1.6= 2-1.6= 0.38+0.5= 0×347= 9+0.78= 810÷27= 9×29+9= 4-3.98= 320-90= 960÷16= 23×3= 82+18= 75÷25= 45×6= 26×5= 23×11=

Answer 1

4.67；0.4；0.43；0；9.78；30；270；0.02；230；60；69；100；3；270；130；253