32.8+19= 0.51÷17= 240÷30= 1000×0.8= 3.06+0.2=
0.67+1.24= 8×125= 7﹣6.28= 8.2﹣0.01= 99×23=
50×4= 5÷1000= 0.42+9.5= 65×25×4= 0.08÷100=
10×0.5= 1.82﹣0.63= 4.5+1.5= 1﹣0.63= 231﹣99=
32.8+19= 0.51÷17= 240÷30= 1000×0.8= 3.06+0.2=
0.67+1.24= 8×125= 7﹣6.28= 8.2﹣0.01= 99×23=
50×4= 5÷1000= 0.42+9.5= 65×25×4= 0.08÷100=
10×0.5= 1.82﹣0.63= 4.5+1.5= 1﹣0.63= 231﹣99=
+
=
+
=
﹣0.125=
．
=
=
= 23= 52= x•x•x=
= a×8×b=
=
=
= 4×3×25=
+
+
．
= 1﹣40%=
= 52= 1÷
=
=
=
=
=
= 0.8×
÷
=
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