口算。1+2= 0+6= 4+2= 2+3=2+4= 4+3= 1+6= 3+3=6+0= 2+4= 1+5=1+6= 5+1= 3+2=2+5= 3+2= 3+4=( )+6=7 4+( )=7 ( )+1=6 ( )+2=54+( )=6 ( )+5=7 ( )+3=7 5+( )=7
15.8-(6+÷12.5%)
10-÷×1
325×0.36+6.75×36
5.6×0.375+×5.4-0.375×0.9
5.6x+4x=17.28