小学五年级小数加减乘除混合运算练习题
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小数混合运算专项训练
1、解方程。
(1)5x=450(2)12(6-x)=42
(3)1.2×6+4x=12(4)8.5x-x=22.5
2、用简便方法计算。
(1)0.25×3.2×12.5
(3)0.25×44
3、用递等式计算。
(1)2.6+1.4×1.5-1.5
(3)2.6+2.4×(1.4-1.05)
30.8÷[14-(9.85+1.07)] [60-
2.881÷0.43-0.24×
3.5
28-(3.4+1.25×2.4)
777×9+1111×3(2)36×10.1
(4)22.2×4+17.8×4
(2)(37-3.6÷4.8)÷12.5(4)15.6÷16×(0.25+1.25)(9.5+28.9)]÷0.1820×[(2.44-1.8)÷0.4+0.15]
2.55×7.1+2.45×7.1
0.8×[15.5-(3.21+5.79)](31.8+3.2×4) ÷ 531.5×4÷(6+3)
0.64×25×7.8+2.22÷2.5+2.5÷2
36.25÷4.25×9.95180-705×6
24÷2.4-2.5×0.8
671×15-974
5.67×0.2-0.62
0.78+5.436+1
10. 3÷4x8÷9-1÷3
20. 3x2÷9+1÷3
7.2÷0.8-1.2×5
2.55×7.1+2.45×7.1(4121+2389)÷7
469×12+149219.4×6.1×2.3
18.1×0.92+3.930.4×0.7×0.25
4. 8× 5÷4+1÷49. 9x5÷6+5÷6
14. 31x5÷6-5÷616. 5÷9x18-14x2÷7
35. 95÷(64-45)36. 178-145÷5×6+42
6.5×(4.8-1.2×4)28-(3.4+1.25×2.4)777×9+1111×3(31.8+3.2×4)÷5
31.5×4÷(6+3)0.64×25×7.8+2.22÷2.5+2.5÷2194-
64.8÷1.8×0.936.72÷4.25×9.95180-705×624÷2.4-2.5×0.8(4121+2389)÷7671×15-974469×12+1492
5.67×0.2-0.62
0.4×0.7×0.250.78+5.436+1
240×78÷(154-115)
2160÷〔(83-79)×18〕280
85×(95-1440÷24)
81432÷(13×52+78) [37.85-
(947-599)+76×64405×(3213-3189)19.4×6.1×2.3
18.1×0.92+3.930.043×24+0.875
4.07×0.86+9.121437×27+27×563〔75-(12+18)〕÷15+
840÷24×5325÷13×(266-250)58870÷(105+20×2)1437×27+27×563(7.85+6.4)] ×30
36×(913-276÷23)[192-(54+38)]×6781432÷(13×52+78)(947-599)+76×6460-(9.5+28.9)÷0.18
2.881÷0.43-0.24×
3.50.8×〔15.5-(3.21+5.79)〕(31.8 3.2×4)÷5194-
64.8÷1.8×0.936.72÷4.25×9.93.416÷(0.016×35)
0.8×[(10-6.76)÷1.2](6.8-6.8×0.55)÷8.50.12× 4.8÷0.12×4.8(58+37)÷(64-
9×5)812-700÷(9+31×11)156×[(17.7-7.2)÷3](3.2×1.5+2.5)÷1.685+14×
(14+208÷26)120-36×4÷18+35
9.72×1.6-18.305÷73.2×(1.5+2.5)÷1.6(58+37)÷(64-9×5)(6.8-
6.8×0.55)÷8.50.12×4.8÷0.12×4.8(3.2×1.5+2.5)÷1.6120-36×4÷18+3515-10.75×0.4-5.7347+45×2-4160÷52(58+37)÷(64-9×5)[(
7.1-5.6)×0.9-1.15] ÷2.5
(3.2×1.5+2.5)÷1.65.4÷[2.6×(3.7-2.9)+0.62]
12×6÷(12-7.2)-6
3.2×6+(1.5+2.5)÷1.6
(3.2×1.5+2.5)÷1.6
120-144÷18+35
347+45×2-4160÷52
(58+37)÷(64-9×5)
95÷(64-45)
812-700÷(9+31×11)120-36×4÷18+35
(6.8-6.8×0.55)÷8.5
0.12× 4.8÷0.12×4.8
0.8×〔15.5-(3.21+5.79)〕(31.8+3.2×4)÷5
31.5×4÷(6+3)
0.64×25×7.8+2.2
2÷2.5+2.5÷2
194-64.8÷1.8×0.9 36.72÷4.25×9.9
5180-705×6
24÷2.4-2.5×0.8 (4121+2389)÷7
671×15-974
469×12+1492
405×(3213-3189)
0.8×[(10-6.76)÷1.2] 19.4×6.1×24
5.67×0.2-0.62
18.1×0.92+3.93