2﹣1.02= 1
+3.25= 4÷
= 2.5×
=
﹣
= 10﹣1
=
﹣×= 0.37÷ =
（1﹣100%）×3=
直接写出得数．
32+68= 910﹣440= 18×10= 910÷70=
12﹣
= 10×10%= 2÷
= 4.5×102=
8.1÷0.03=
÷
=
56+37=80﹣16=31.5+5=12﹣1.1=
2×0.2=2.87÷0.7=30÷50=25×8=
=
=
=
=
=
=
=
=
口算，直接写出得数．
64﹣46= 1.72+2.38= 0.25×40= 2.4÷0.6=
=
= 12
= 8×12.5%=
= 0.52=
直接写出得数
25+75= 8﹣5.3= 4.65×100=
×4÷×4=
×2= 10÷
= 350÷50=
+﹣
×
=