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            • 1. 16km增加
              1
              4
              后是    km;16km增加
              1
              4
              km后是    km.
            • 2. 直接写得数.
              1
              4
              +
              1
              5
              =
              1-
              1
              11
              =
              24÷5%=2÷1%-2=
              4
              5
              ×
              3
              8
              =
              10%+1%=0.9+99×0.9=
              5
              6
              ×1.2=
              16÷20%=
              1
              6
              ×
              1
              3
              =
            • 3. 直接写得数.
              3÷8=
              8
              3
              +
              4
              3
              =
              15
              8
              -
              3
              8
              =
              5.4×101-5.4=
              8.4÷0.6=1.2×0.05=34-18.2=3.6×4÷3.6÷4=
            • 4. 直接写出结果.
              0.3+0.02=
              3
              4
              +0.4=
              18.3-0.98=0.25×9+0.25=
              3.6-
              7
              8
              =
              3
              8
              +
              2
              5
              =
              7
              15
              ÷
              4
              5
              =
              2
              3
              ×
              5
              18
              =
              7
              8
              ÷0.375=
              3
              4
              +
              1
              3
              )×4=
              10-0.998=6.04×2.5=
            • 5. 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=
            • 6. 直接写得数
              3
              4
              +
              1
              4
              =
              3
              4
              =
              2
              5
              ÷10=
              5
              6
              -
              1
              6
              =
              3
              4
              ×
              2
              3
              =
              5
              6
              ×5=
              2-
              4
              5
              =
              4
              5
              ÷
              5
              4
              =
              5
              7
              ÷
              10
              21
              =
              4
              7
              ÷4=
            • 7. 直接写得数.
              4-2.6=0.5×0.4=4.8÷12=
              1
              7
              ×
              1
              7
              =
              9
              25
              ÷
              1
              5
              =
              5
              6
              ×
              8
              15
              =
              1
              3
              -
              1
              4
              =
              3
              4
              ×3÷
              3
              4
              ×3=
            • 8. 直接写出得数.
              30×4=64÷2=930÷3=600×5=
              80÷4=0÷3=8×50=32×3=
              1
              8
              +
              5
              8
              =
              5
              6
              -
              2
              6
              =
              1
              4
              -
              3
              4
              =
              1-
              1
              9
              =
            • 9. 直接写得数
              2-
              7
              15
              =
              5
              9
              ×
              3
              5
              =
              5
              51
              ×17=
              5
              6
              ×6×
              1
              10
              =
              1
              4
              +
              1
              5
              =
              1
              14
              =
              7
              12
              +
              1
              8
              =
              3
              4
              ×
              5
              6
              ÷
              5
              6
              ×
              1
              10
              =
            • 10. 比4米多
              1
              2
              米是    米;
              比4米多
              1
              2
                  米;
              45分钟=    小时(填分数)
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