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            • 1. 直接写出得数.
              472-398=
              11
              12
              +
              5
              6
              =
              84.84÷0.84=25%×4=5.2+8=
              2.5-0.36-0.64=
              6
              25
              ×
              5
              12
              =
              5×4÷5×4=3.54+0.74-2.54=
              3
              8
              ×
              5
              4
              +
              5
              4
              ×
              5
              8
              =
            • 2. 脱式计算.
              (1)
              7
              8
              -
              5
              6
              +
              5
              12

              (2)
              4
              7
              +
              4
              9
              +
              3
              7
              +
              1
              9
            • 3. 直接写出得数.
              20×5.5=3.25×4=
              3
              8
              ×12=
              80÷
              4
              5
              =
              2
              3
              ÷7=
              5.3-2.45=1.25×0.8=2-
              1
              2
              -
              2
              3
              =
            • 4. 直接写出得数.
              1
              5
              ×
              1
              4
              =
              1.5×
              3
              5
              =
              6
              7
              ÷3=
              5
              8
              ÷2=
              2
              5
              ÷
              4
              15
              =
              1
              4
              ÷0.25=
              5
              8
              ×
              3
              5
              =
              3
              4
              =
              4
              5
              ×
              5
              6
              =
              1
              4
              -
              1
              5
              =
              3
              4
              +
              1
              8
              =
              1÷10%=
              0.4÷
              1
              3
              =
              0.8×
              1
              2
              =
              1
              3
              ÷0.6=
              5
              7
              ×0.2=
            • 5. 直接写出答案
              17×6=200÷5=2.5×0.4=48÷8×3=0÷3=
              2.3+1.6=
              2
              3
              ×
              3
              8
              =
              1-
              2
              3
              =
              7
              10
              ÷14=
              8
              9
              =
            • 6. 口算
              1
              3
              +
              1
              4
              =
              101÷100=10-
              2
              5
              =
              2.4×0.5=
              7
              8
              ×56=
              3
              5
              =
            • 7. 口算
              3
              4
              +
              1
              4
              =
              7.4-3.8=7.4×0.01=27+68=
              2
              3
              ×0.75=
              0.125×8=12.6÷0.3=0.32=
              1
              2
              -
              1
              2
              =
              8÷(1÷
              3
              8
              )=
            • 8. 直接写出得数
              2.4+3.6=
              3
              16
              ×4=
              1
              4
              -
              1
              5
              =
              0.25÷0.5=
              4
              3
              -
              4
              9
              -
              5
              9
              =
              2
              3
              -
              1
              4
              =
              0.6:2=
              2
              3
              3
              4
              =
              12×20%=2.3×
              4
              5
              ÷2.3×
              4
              5
              =
            • 9. 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=
            • 10. 口算
              18+48=70-21         20.9+1=17-0.1=1.3×0.4=
              0.72÷9=
              1
              9
              +
              5
              9
              =
              5
              6
              -
              1
              6
              =
              2
              15
              ×
              5
              6
              =
              3
              5
              ÷
              1
              2
              =
            0/40

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