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            • 1. 口算.
              170%+3=1÷5%=100×25%=1-3%=
              45÷30%=4÷80=
              3
              8
              -37.5%=
              3
              4
              ÷75%×
              3
              4
              =
            • 2. 计算
              1
              8
              ×56×
              2
              7
                               
              7×30%
              1
              6
              ×6%          
              12×(
              1
              2
              +
              3
              4
              )           
              4÷4%
            • 3. 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=
            • 4. 直接写出得数.
              1-70%=3.14×32=2+10%=10-2×15%=
              1÷25%=1-17%=
              1
              2
              -20%=
              3
              4
              ÷2+
              3
              4
              ÷4=
            • 5. 口算
              32÷
              1
              4
              =
              5
              6
              ×
              3
              4
              =
              1-20%=
              3.2×
              3
              8
              =
              1
              2
              ÷50%=
              0.4÷60%=
            • 6. 直接写得数.
              0.25×4=0.49÷0.7=2-1.25=
              3
              8
              ÷
              9
              10
              =
              24÷
              3
              5
              =
              8×125%=
              3
              8
              +0.625=
              2
              5
              ×9+
              2
              5
              =
            • 7. 直接写得数.
              26×50=24×0.3=10-0.78=3.6×
              4
              9
              =
              12÷40%=473-298=0.48÷0.004=
              4
              5
              +
              1
              2
              =
            • 8. 口算.
              15×20%=0.25×12=0.51+1.49=
              3
              8
              =
              998×0.96≈79.6÷39≈896+103≈8603-586≈
            • 9. 直接写得数.
              5.67+0.33=6-20%=
              2
              3
              -
              1
              2
              =
              7
              11
              ×3÷
              7
              11
              =
              45÷15-2÷4=
              2.125×8=
              5
              8
              ×
              3
              10
              =
              3
              4
              ×1.2=
              1
              7
              +
              1
              9
              )×63=
              1
              2
              +
              1
              2
              ÷1=
            • 10. 直接写得数.
              1
              3
              +
              1
              4
              =
              3-
              1
              3
              =
              4.6+4=10.1-1=
              4
              5
              ×4=
              25×
              3
              5
              =
              1
              4
              ×
              1
              4
              =
              3
              8
              ×
              4
              5
              =
              1
              4
              ÷
              4
              5
              =
              2
              3
              =
              8
              11
              ÷2=
              3
              5
              =
              4×20%=42%-0.42=1÷75%=1%÷10%=
            0/40

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