算一算．
81÷9= 8×9﹣27= 45÷5+21= 3×3×6= 4×9÷6=
36÷4÷3= 2×4×5= 63÷9×4= 3×8﹣11= 40﹣4×9=
30÷6×9= 72÷8÷3= 8×9﹣9= 6×9﹣6= 9×9﹣30=
算一算．
81÷9= 8×9﹣27= 45÷5+21= 3×3×6= 4×9÷6=
36÷4÷3= 2×4×5= 63÷9×4= 3×8﹣11= 40﹣4×9=
30÷6×9= 72÷8÷3= 8×9﹣9= 6×9﹣6= 9×9﹣30=
=
×
= 0÷
= 4.1﹣
÷
=
÷
=
×8×
=化简比0.6：
=
×
=
×4=
×
×
= 3×
=
÷2=
=
×
= 12
=
﹣1÷2=
×
=
÷
÷26=
=
=
=
×
÷
=
=
= 1.2÷
=
×
=
÷5= 1÷
= 15×
= 1.25×
=
×4=
÷
= 1.8﹣40%= 12×（
+
）=
×6+4×
=
=
=
=
=
=
=
=
=
=
=
=
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