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            • 1.     是36的
              11
              9
              ,比18多25%.
            • 2. 口算.
              170%+3=1÷5%=100×25%=1-3%=
              45÷30%=4÷80=
              3
              8
              -37.5%=
              3
              4
              ÷75%×
              3
              4
              =
            • 3. 计算
              1
              8
              ×56×
              2
              7
                               
              7×30%
              1
              6
              ×6%          
              12×(
              1
              2
              +
              3
              4
              )           
              4÷4%
            • 4. 直接写得数.
              11
              14
              ÷
              23
              28
              =
              0.375÷0.625=
              34
              39
              ×
              3
              17
              =
              9-
              4
              9
              =
              100÷1%=
              1
              4
              ×
              1
              4
              ÷
              1
              4
              ×
              1
              4
              =
              1
              5
              =
              0.42=
            • 5. 直接写出得数.
              2
              3
              =
              1
              4
              -
              1
              7
              =
              5
              6
              =
              2.4×50%=10-9.9%=
              5
              7
              ×
              7
              10
              =
              5
              8
              ÷15=
              0.022=1-46%-4%=4×25%÷4×25%=
            • 6. 直接写出得数
              25×24=4.2÷0.2=
              1
              4
              ×
              2
              5
              =
              12-11
              7
              9
              =
              1-20%=1÷0.2=4×5%=
              5
              8
              ×
              2
              5
              =
              12-
              5
              9
              -
              4
              9
              =
              0.32×
              1
              4
              =
            • 7. 直接写答案
              1+15%=1÷50%=37.5%+
              5
              8
              =
              6-
              1
              3
              =
              5
              8
              +
              1
              3
              =
              4
              5
              ÷
              5
              4
              =
              1.25×0.8=
              1
              5
              :5=
            • 8. 口算
              1
              3
              +
              2
              3
              ÷2=
              25÷
              1
              5
              =
              1
              5
              ×5=
              12×101=
              1
              6
              ×
              1
              6
              ÷
              1
              6
              ×
              1
              6
              =
              0.83+3%=
              1
              7
              -
              1
              9
              =
              16÷16%=
            • 9. 看谁算得又对又快.
              75%×
              1
              3
              =
              5
              9
              ×
              2
              5
              +
              4
              9
              ÷
              5
              2
              =
              5.2×101=(0.9-
              1
              2
              )×
              3
              8
              =
              1.25×8.8=2.01-1.52=
              5
              8
              ×
              5
              6
              ÷
              5
              8
              ×
              5
              6
              =
              5
              7
              -
              2
              3
              =
              2370÷1.25÷8=254-101+98=
            • 10. 直接写出得数
              2
              7
              ×2=
              7
              12
              +
              1
              2
              =
              4×(
              1
              12
              +
              1
              4
              )=
              1
              2
              ×99+99×
              1
              2
              =
              1÷37.5%=
              14
              19
              ÷
              7
              19
              =
              1
              4
              -
              1
              5
              )×20=
              1
              6
              +
              5
              6
              ×
              1
              5
              =
            0/40

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