五年级小数加减乘除混合运算计算题练习题完整版本

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-(9.5+28.9)]÷0.18 2.881÷0.43-0.24×3.5 20×[(2.44-1.8)÷0.4+0.15] 28-(3.4+1.25×2.4) 2.55×7.1+2.45×7.1

(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)777×9+1111×3 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 36.25÷4.25×9.9 6.5×(4.8-1.2×4) 5180-705×6 28-(3.4+1.25×2.4)

24÷2.4-2.5×0.8 2.55×7.1+2.45×7.1 (4121+2389)÷7 671×15-974 469×12+1492 19.4×6.1×2.3 5.67×0.2-0.62 18.1×0.92+3.93 0.4×0.7×0.25 0.78+5.436+1 4. 8× 5÷4+1÷4 9. 9x5÷6+5÷6 10. 3÷4x8÷9-1÷3 14. 31x5÷6-5÷6 16. 5÷9x18-14x2÷7 20. 3x2÷9+1÷3 35. 95÷(64-45) 36. 178-145÷5×6+42 7.2÷0.8-1.2×5 777×9+1111×3 (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) 19.4×6.1×2.3 5.67×0.2-0.62 18.1×0.92+3.93 0.043×24+0.875 0.4×0.7×0.25 0.78+5.436+1

4.07×0.86+9.12

240×78÷(154-115) 1437×27+27×563 〔75-(12+18)〕÷15

2160÷〔(83-79)×18〕 280+840÷24×5 325÷13×(266-250)

85×(95-1440÷24) 58870÷(105+20×2) 1437×27+27×563

81432÷(13×52+78) [37.85-(7.85+6.4)] ×30

(947-599)+76×64 36×(913-276÷23) [192-(54+38)]×67

81432÷(13×52+78) (947-599)+76×64 60-(9.5+28.9)÷0.18

2.881÷0.43-0.24×3.5 0.8×〔15.5-(3.21+5.79)〕 (31.8 3.2×4)÷5 194-64.8÷1.8×0.9 36.72÷4.25×9.9 3.416÷(0.016×35)

0.8×[(10-6.76)÷1.2] (6.8-6.8×0.55)÷8.5 0.12× 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)÷1.6 85+14×(14+208÷26) 120-36×4÷18+35

9.72×1.6-18.305÷7 3.2×(1.5+2.5)÷1.6 (58+37)÷(64-9×5)

(6.8-6.8×0.55)÷8.5 0.12× 4.8÷0.12×4.8 (3.2×1.5+2.5)÷1.6

120-36×4÷18+35 15-10.75×0.4-5.7 347+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)÷1.6 5.4÷[2.6×(3.7-2.9)+0.62] 12×6÷(12-7.2)-6 3.2×6+(1.5+2.5)÷1.6

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