16÷20%= 4.8÷(0.4+1.2)=
-(-)= 12÷0.25÷4=
写作:
读作:
______________?
6.5+2.5= 1.23÷3= 5.2×5= 7÷14%=
= ﹣= ×= 0÷2022=
13.4﹣7.7= = = 299×5≈