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    7-0.8 = 29+92 = 【查看更多】

     

    题目列表(包括答案和解析)

    口算．
    2×
    2
    3
    =    		 1.5÷
    3
    4
    =
    3
    8
    ×0.8=
    2
    9
    ×9=    		 1.2÷
    1
    5
    =
    7
    9
    ÷2=
    5
    3
    ÷
    2
    3
    =    		 2.4÷
    5
    2
    =    		 1÷5
    3
    4
    =
    6
    7
    ÷3=

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    3x=7.2             0.8+x=9.1            3.2÷x=0.8             x-105=15．

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    3x=7.2            0.8+x=9.1           3.2÷x=0.8            x-105=15

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    直接写出得数．
    500÷5= 80×50= 56+35= 2700÷9=
    36×19≈ 2.3+3.4= 5.3-3.5= 8+4.7=
    12×200= 92×29≈ 9-3.5= 15×20=
    0÷23= 2000÷4= 411÷7≈ 84÷9≈

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    1.8+0.5= 2.5-0.1= 4.8-0.2= 74+71=
    48+10= 24÷12= 68÷0.68= 94.7÷0.1=
    61.8÷0.6= 0.8×6.7= 3÷8= 0.12×3=
    32= 8.2-2.8= 3.5÷0.7=
    4
    5
    -
    1
    5
    =
    1
    3
    +
    1
    4
    =
    1
    16
    +
    7
    16
    =    		 5.3+0.5= 46+18=
    8.5-1.5= 69+10= 28.8+0.4= 40.5÷0.5=
    92.7÷0.3= 0.5×1.3= 16×0.5= 4.4+0.1=
    6.1-0.1= 3.3+0.6= 33.2÷0.4= 1÷0.25=
    1.5×4= 6.5+1.35= 1.3-1.2=
    7
    8
    -
    1
    4
    =
    1
    2
    +
    3
    4
    =
    5
    6
    -
    1
    3
    =    		 5.7-1.7= 0.35+0.75=
    0.2×1.1= 1.6÷0.4= 10÷4= 3.4÷0.2=
    52÷13= 57÷19= 3.7-0.8= 29+92=
    8.2+0.7= 6.5-5.6= 4.8÷0.3= 33=
    1.25×8=
    2
    3
    +
    1
    6
    =
    1
    2
    -
    1
    3
    =
    7
    9
    +
    1
    9
    =
    2.1÷0.3= 3.2×3= 2.8-1.8= 0.9×6.2=

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