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    精英家教网 > 小学数学 > 题目详情
    3
    4
    ×2    =
    1
    6
    +
    1
    2
    =
    5
    9
    ÷5    =
    1
    12
    ×
    6
    7
    =
    3
    4
    ÷3    =
    5
    4
    ×
    5
    4
    =
    5
    8
    ÷1    =    		 5-
    2
    3
    =
    3
    9
    ×12    =
    3
    5
    ×
    5
    12
    =    		 4-
    2
    3
    =
    7
    12
    ×3    =
    2
    7
    ÷14    =    		 8+
    3
    5
    =    		 0×
    13
    30
    =    		 39×
    3
    13
    =
    8×
    1
    2
    =
    5
    6
    ÷
    3
    4
    =    		 4×
    12
    7
    =    		 20÷
    4
    5
    =
    1-
    9
    10
    =    		 2.5×16=
    5
    12
    ÷
    1
    6
    =
    3
    2
    ×
    4
    5
    =
    8
    15
    ÷24    =    		 11÷
    22
    8
    =
    1
    2
    ÷
    3
    8
    =
    4
    7
    ÷
    2
    3
    =
    3
    4
    +
    1
    7
    =    		 1.5÷0.05= 0×
    1
    9
    ×9    =    		 1.5÷0.05=
    5
    8
    ÷
    7
    12
    =
    4
    5
    ×
    2
    3
    ×
    5
    6
    =
    5
    9
    ×
    2
    5
    =    		 2.5×0.4=
    14×
    5
    16
    =    		 (
    1
    2
    +
    1
    3
    )×12    =
    14
    33
    ×
    3
    7
    =    		 0×
    7
    9
    =
    5
    8
    ×
    5
    8
    =
    5
    21
    +
    4
    7
    =
    7
    9
    ÷7    =    		 2-
    1
    4
    =
    3
    5
    -
    1
    8
    =
    4
    21
    ÷
    8
    7
    =
    2
    3
    -
    1
    4
    =    		 6.25+1.75=
    1
    2
    ÷
    7
    18
    =
    9
    10
    ×6    =
    1
    8
    +
    1
    9
    =
    3
    4
    ÷
    4
    3
    =
    1
    2
    ×
    2
    3
    =    		 12-
    5
    7
    =    		 1÷
    2
    5
    =
    2
    9
    ÷18    =
    7
    28
    ÷
    2
    9
    =    		 10×1×
    2
    5
    =    		 20÷
    4
    5
    =
    1
    3
    ×9+9×
    2
    3
    =
    42÷
    21
    23
    =
    3
    8
    ÷12    =
    分析：本题按照分数加减乘除的运算法则直接运算．
    解答：解：
    3
    4
    ×2    =
    3
    2
    1
    6
    +
    1
    2
    =
    2
    3
    5
    9
    ÷5    =
    1
    9
    1
    12
    ×
    6
    7
    =
    1
    14
    3
    4
    ÷3    =
    1
    4
    5
    4
    ×
    5
    4
    =
    25
    16
    5
    8
    ÷1    =
    5
    8
    		 5-
    2
    3
    =4
    1
    3
    3
    9
    ×12    =4
    3
    5
    ×
    5
    12
    =
    1
    4
    		 4-
    2
    3
    =3
    1
    3
    7
    12
    ×3    =
    7
    4
    2
    7
    ÷14    =
    1
    49
    		 8+
    3
    5
    =8
    3
    5
    		 0×
    13
    30
    =0    		 39×
    3
    13
    =9
    8×
    1
    2
    =4
    5
    6
    ÷
    3
    4
    =
    10
    9
    		 4×
    12
    7
    =
    48
    7
    		 20÷
    4
    5
    =25
    1-
    9
    10
    =
    1
    10
    		 2.5×16=40
    5
    12
    ÷
    1
    6
    =
    5
    2
    3
    2
    ×
    4
    5
    =
    6
    5
    8
    15
    ÷24    =
    1
    45
    		 11÷
    22
    8
    =4
    1
    2
    ÷
    3
    8
    =
    4
    3
    4
    7
    ÷
    2
    3
    =
    6
    7
    ，
    3
    4
    +
    1
    7
    =
    25
    28
    		 1.5÷0.05=30 0×
    1
    9
    ×9    =0    		 1.5÷0.05=30
    5
    8
    ÷
    7
    12
    =
    15
    14
    4
    5
    ×
    2
    3
    ×
    5
    6
    =
    4
    9
    5
    9
    ×
    2
    5
    =
    2
    9
    		 2.5×0.4=1
    14×
    5
    16
    =
    35
    8
    		 (
    1
    2
    +
    1
    3
    )×12    =10
    14
    33
    ×
    3
    7
    =
    2
    11
    		 0×
    7
    9
    =0
    5
    8
    ×
    5
    8
    =
    25
    64
    5
    21
    +
    4
    7
    =
    17
    21
    7
    9
    ÷7    =
    1
    9
    		 2-
    1
    4
    =1
    3
    4
    3
    5
    -
    1
    8
    =
    19
    40
    4
    21
    ÷
    8
    7
    =
    1
    6
    2
    3
    -
    1
    4
    =
    5
    12
    		 6.25+1.75=8
    1
    2
    ÷
    7
    18
    =
    9
    7
    9
    10
    ×6    =
    27
    5
    1
    8
    +
    1
    9
    =
    17
    72
    3
    4
    ÷
    4
    3
    =
    9
    16
    1
    2
    ×
    2
    3
    =
    1
    3
    		 12-
    5
    7
    =11
    2
    7
    		 1÷
    2
    5
    =
    5
    2
    2
    9
    ÷18    =
    1
    81
    7
    28
    ÷
    2
    9
    =
    9
    8
    		 10×1×
    2
    5
    =4    		 20÷
    4
    5
    =25
    1
    3
    ×9+9×
    2
    3
    =9
    42÷
    21
    23
    =46
    3
    8
    ÷12    =
    1
    32
    点评：本题按照运算法则直接运算，注意结果化成最简分数．
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