19+23=
5﹣1.6=
0.23÷0.1=
0.4×0.2=
=
÷0.25=
6÷80%= 1.74+7.5= 0.53= 3-3÷4= ×0.4÷×0.4=
2分米:4毫米= 4+ = 3.35+6.65×0= ( ):0.25=1 61×29≈
650+200= 78-3.2= 18×0.4= 2÷0.05=
+= 1-= ×= ÷=
1.69+0.1=
÷=
0.52=
﹣=
2.6×0.25×4=
﹣×0=
9.9×9+9.9=
×÷=
×= 0.54÷6= ÷= 2.6×0.3= 27.8﹣1.9=
56+44= 0.9×0.6= 20﹣3.7= 8÷100= 2.5×3.5×4=
-= += 10÷= 15×= ×24+24=