3.7+0.56= 1.3﹣0.8=18.5÷100= 0.66+2.2=6.22﹣3.2= 4.9÷0.01=12.7﹣7.5+2.3= 1.25×0.8﹣0.1=0.6+0.6÷0.1=
+= 6.2÷0.5= = 1﹣= = 44== 8﹣2= = 4÷0.25= = +4×=
1+= 2﹣= ﹣= 1.2×0.01=﹣﹣= ÷= 6×= ×=÷6= 3÷4+=
直接写出得数.1﹣9= +0.2= +﹣0.2= 5÷=3.6×= ×1.5= ﹣= 1÷=×15= 4.5+= 2.43+4.57= ﹣=×1.2= 2.5﹣= 5﹣1﹣1.6= ÷=2×0= (0.18×)÷9= 0.2 5×4= ÷=(+)×12=
直接写得数.+= ×18= ﹣= ××8=×= ÷6= ÷= (+)×24=÷= 24×25% 0÷ ×÷×=
直接写出得数0.12= = = == = ×÷= ×÷×=