×45 ×5 - ×× 0× × 2.8× ×× 18× 7× 0×× ×3× 查看更多

 

题目列表(包括答案和解析)

口算.

(1)0.340.45=

(2)7.72.6=

(3)3.60.8=

(4)0.390.15=

(5)64.6=

(6)0.350.18=

(7)0.080.92=

(8)7.41.6=

(9)3.54.25.5=

(10)7.81.52.3=

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口算.

(1)0.340.45=

(2)7.72.6=

(3)3.60.8=

(4)0.390.15=

(5)64.6=

(6)0.350.18=

(7)0.080.92=

(8)7.41.6=

(9)3.54.25.5=

(10)7.81.52.3=

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下面各题怎样简便就怎样算。                    
(1)3.8+1.94+0.2+1.06  (2)31.65-7.64-8.36
(3)15.18-9.99+1.82 (4)8.7+3.92-5.92
(5)17.85+3.74-5.56 (6)45.6-(83.7-78.8)

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脱式计算。(能简算的要简算)
(1)45÷0.75-(15+7.5×0.6) (2)5.25×8.2+5.25×0.8-5.25
(3)18.45 -(3.8×2.7+5.3) (4)+

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口算.

(1)12.513.4=

(2)10.65.4=

(3)15.812.3=

(4)104.8=

(5)4.53.25=

(6)7.252.75=

(7)2.781.73=

(8)5.451.45=

(9)0.182.30.82=

(10)10.52.437.57=

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