﹣2.7= 14×
= 
÷5=
1
= 
= 
=
= 
﹣
= 
=
= 
= 
=
= 24
= 
=
= 
= =
= 
= 
=
= 
= 
=
= 
= 
=
= 
= 
=
0.25×8= 3.4﹣
﹣
= 
+0.5=
10.5﹣1.05= 
= 10.01÷10%=
1.5×
= 
80%= 1×9
=
3×
=
﹣2.7= 14×= ÷5=
1= = == ﹣= == = == 24= == = == = == = == = == = =
0.25×8= 3.4﹣﹣= +0.5=
10.5﹣1.05= = 10.01÷10%=
1.5×= 80%= 1×9=
3×=
+
=
×
= 1﹣20%﹣
= 4×
=
=
+25%= 3﹣
=
=
= 4﹣1.63=
=
=
=
=
=
=
= 27×5%=
%=
=
+
=
﹣
=
×
=
×
=
×
÷
=
=
×0+3= 3
+1.75=
÷
=（
+
）×
=
+0.625= 24×
=
÷9=
+
）×12= 12×25%=
÷
=
=
= 3.14×8=
=
=
= 52=
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