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            • 1. 直接写出得数
              5
              9
              +
              8
              9
              =
              1
              2
              -
              1
              5
              =
              1
              4
              +
              1
              5
              =
              1-
              5
              6
              =
              7
              8
              -
              3
              8
              =
              3
              7
              +
              1
              3
              =
              1-
              1
              6
              -
              1
              6
              =
              5-
              3
              4
              =
              9
              10
              -
              1
              2
              =
              4
              5
              +
              1
              5
              =
              52=10-7
              1
              4
              =
            • 2. 直接写出得数.
              5
              6
              -
              1
              2
              =
              3
              2
              ÷
              1
              2
              =
              3.14×8=
              7
              9
              ×
              3
              7
              =
              1-40%=
              3
              8
              +3=
              14
              15
              ÷7=
              52=
            • 3. 直接写出得数.
              1
              3
              +
              1
              4
              =
              1-
              7
              9
              =
              3
              4
              -
              1
              2
              =
              0.12=
              1
              5
              -
              1
              7
              =
              1
              4
              +
              3
              10
              =
              3
              8
              -
              5
              16
              =
              1+
              2
              9
              =
            • 4. 直接写出得数.
              2006-609=0.58+0.2=0.23÷10%=0.18÷0.2=
              1.5×40=0÷0.08=3÷9=2.5+2.5÷5=
              4
              5
              ÷10=
              5
              8
              -0.375=
              2
              3
              ×
              9
              8
              =
              1
              2
              +
              2
              3
              =
              22+32=
              3
              7
              ×2.8=
              3.14×5=
              5
              8
              ×3÷
              5
              8
              ×3=
            • 5. 直接写得数:
              28×
              3
              14
              =
              9
              4
              =
              0.32=
              9
              8
              -
              1
              8
              ×7=
              6.1÷0.01=
              10×10%=1÷5%=
              5
              6
              ×5=
              7-0.98=
              1
              4
              ×
              1
              3
              ÷
              1
              4
              ×
              1
              3
              =
            • 6. 73表示7×3.    
            • 7. 直接写出得数
              1-1%=
              2
              3
              -
              1
              5
              =
              5
              8
              ÷
              5
              12
              =
              1+7÷3=
              22=
              6
              7
              ÷
              4
              5
              ×
              4
              5
              =
              125%×8=
              1
              2
              ×
              3
              7
              ÷
              1
              2
              ×
              3
              7
              =
            • 8. 直接写出得数.
              1
              2
              +
              1
              2
              =
              1
              2
              +
              1
              3
              =
              2
              5
              +
              3
              10
              =
              1-
              11
              15
              =
              1
              2
              -0.5=
              5
              8
              -
              3
              8
              =
              62=53=1+
              3
              4
              =
              3-
              1
              3
              -
              2
              3
              =
            • 9. 直接写出得数.
              4
              5
              +
              2
              5
              =
              3
              4
              -
              1
              4
              =
              2-
              5
              6
              =
              5
              8
              +
              3
              8
              -
              5
              8
              +
              3
              8
              =
              1
              5
              +
              1
              6
              =
              202=
              1
              5
              -
              1
              8
              =
              4
              5
              +
              3
              7
              +
              1
              5
              =
            • 10.
              口算:
              3.5×0.1=    

              200×0.04=    

              0.21×0.3=    

              12-1.2=    
              62=     3.6÷0.09=     2.5-1.37=     5.5÷11=    
            0/40

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