=| 3.14×32 | 40%+20% |  + |  ÷4 |
 ×4﹣2 | 39× × | ÷50% | 100%﹣1 |
0.2﹣ = | 60%+0.4= | （ + ）×6= |  ÷25%= |
| ×2÷×2= | 13﹣ ﹣ = | 0.56× = |  ×0.34×400= |
47.3﹣17 +1 ﹣2.25 | 243×8 +75.7×82.5 | 15.3﹣4.5÷0.18×56% |
| 765÷17×36﹣620 | 1 ÷[ ﹣（ ﹣ ）] | 2015× |
=2÷ ﹣ = | 48÷1.2= | 2.4÷0.06= | 8.3+6= |
| 9.5÷1%= |  ÷18= | 7.2﹣0.48= | 99× = |
| 2﹣= | 118÷198×0= |  ﹣ = | ×4÷×4= |
| 20.86﹣5.63﹣4.37 | 624÷6﹣38 | 12.5×32×25% |
 ÷[（ + ）× ] | （ + ）×24 | 69÷（2.4× +1.5） |
 ﹣ = |  + = |  ×12= |
 ÷ = |  ÷20%= | 4.8+2%= |
+
=
﹣
=
×
=
=0.4= %=2： ． 
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