小学五年级小数加减乘除混合运算练习题.doc

小学五年级小数加减乘除混合运算练习题 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)]÷0.18 20×[(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) ÷ 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 5180－705×6 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+1492 19.4×6.1×2.3 18.1×0.92+3.93 0.4×0.7×0.25 4. 8× 5÷4+1÷4 9. 9x5÷6+5÷6 14. 31x5÷6-5÷6 16. 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+2.2 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 5.67×0.2-0.62 0.4×0.7×0.25 0.78+5.436+1 240×78÷〔154-115〕 2160÷〔〔83-79〕×18〕 280 85×(95－1440÷24) 27×563 81432÷(13×52＋78) [37.85- 〔947－599〕＋76×64 405×(3213-3189) 19.4×6.1×2.3 18.1×0.92+3.93 0.043×24+0.875 4.07×0.86+9.12 1437×27＋27×563 〔75-〔12+18〕〕÷15＋840÷24×5 325÷13×(266－250) 58870÷(105＋20×2) 1437×27＋〔7.85+6.4〕] ×30 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 〔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 24+0.875×99 0.4×0.7×0.25 0.75×102 100-56.23 31.50＋160÷40 〔58+370〕÷〔64-45〕 32.120-144÷18+35 33.347+45×2-4160÷52 34〔58+37〕÷〔64-9×5〕 35.95÷〔64-45〕 36.178-145÷5×6+42 420+580-64×21÷28 第 页 共 页。