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            • 1.
              1.1×3.3×9.9+3×9×27+
              1
              5
              ×
              3
              5
              ×
              9
              5
              1.1×2.2×4.4+3×6×12+
              1
              5
              ×
              2
              5
              ×
              4
              5
            • 2. 试算出下列各式之值:
              4444×9999÷6666=
              1
              20
              ×16-
              1
              20
              ×8+
              1
              20
              ×4-
              1
              20
              ×2=
              1÷(2÷3)÷(3÷4)÷(4÷5)÷(5÷6)÷(6÷7)÷(7÷8)=
              12345-(1234+2345)=
              0.125×0.25×64×0.5=
              2010×20092009-2009×20102010=
              79999+7999+799+79+24=
              4
              5
              ×125
              1-(
              3
              4
              +
              1
              12
              )
              =
              10%÷20×30÷40%=
              1
              1-
              1
              θ
              =3,θ=
            • 3. 用简便方法计算
              (1)8.37-3.25-(1.37+2.25)
              (2)3.375÷5
              1
              4
              -
              3
              8
              ×
              4
              21

              (3)9÷13+13÷9+11÷13+14÷9+6÷13           
              (4)9966×6+6678×18.
            • 4.
              1
              1+
              1
              2+
              1
              3+
              1
              4+
              1
              5
              =    
            • 5.
              [
              1
              3
              +
              1
              2
              ×(
              3
              4
              -
              1
              3
              )]
              1
              2
              ×(
              3
              4
              -
              1
              3
              )
              =    
            • 6.
              2
              3-
              7
              2
              1
              3
              ×4+
              7
              3
              =    
            • 7.
              30÷(
              1
              2
              +
              1
              3
              +
              1
              5
              )
              161
              374
              ÷
              598
              297
              ×
              260
              31
              =    
            • 8.
              1
              13
              ×[1-
              1
              5
              ×[1-
              1
              7
              ×(1-
              1
              11
              )]]
              451
              493
              ×
              377
              943
              ÷
              429
              391
              -
              38
              455
              =    
            • 9. 试算出下列各式之值:
              99999×7+11111×37=
              17.48×37-174.8×1.9+17.48×82=
              (2009-2007+2005-2003+…+5-3+1)+(2-4+6-8…+2006-2008)=
              99+198+297+…+891+990=
              1-(
              1
              4
              -
              1
              8
              )-(
              1
              8
              -
              1
              16
              )-(
              1
              16
              -
              1
              32
              )-(
              1
              32
              -
              1
              64
              )=
              136136136136
              221221221221
              =
              (3
              1
              2
              -2
              1
              3
              )÷1
              1
              6
              =
              59×0.5×236
              119
              =
              200÷150-150%×50%=
              1
              1+
              1
              1+
              1
              =
              3
              5
              ,△=
            • 10.
              1
              1+
              1
              3+
              1
              5+
              1
              7+
              1
              9
              =    
            0/40

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