小数的四则混合运算及应用题大全及答案
更新时间:2021-06-23
类型:小学五年级数学题
题数:515
答:
( 258.5 - 2.9×50)÷50=2.27(元)
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答:
[(2.7+4.5)÷12]×0.3=[7.2÷12]×0.3=0.6×0.3=0.18.
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答:
16.4÷0.4﹣2×5.3=41﹣10.6=30.4
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答:
(1)16.4÷0.4-2×5.3=41-10.6=30.4(2)[(2.7+4.5)÷12]×0.3=[7.2÷12]×0.3=0.6×0.3=0.18
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答:
这台机器的工作效率:0.14÷0.7=0.2(万个)生产6.5小时加工的零件的件数:0.2×6.5=1.3(万个)答:可以加工1.3万个零件.
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答:
(7.5﹣1.5)×0.86=6×0.86=5.16答:积是5.16.
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答:
乙仓:44.8÷(2.4﹣1)=32(吨);甲仓:32×2.4=76.8(吨)
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答:
(1)832.44;(2)1390;(3)2.4;(4)250
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答:
(1)7.85÷0.25×6.48 =31.4×6.48 =203.472(2)6.7+19.34﹣3.63÷0.6 =6.7+19.34﹣6.05 =26.04﹣6.05 =19.99(3)0.24×[151﹣(53.2﹣2.2)÷0.51] =0.24×[151﹣51÷0.51] =0.24×[151﹣100] =0.24×(50+1) =0.24&time
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答:
(1)96÷(2.1﹣1.9)×0.6; (2)96÷(2.1﹣1.9×0.6)
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答:
10﹣4.3×2.6?2.15=10﹣11.18÷2.15=10﹣5.2=4.8
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答:
(1)8.35×101﹣8.35 =8.35×(101﹣1) =8.35×100 =835(2)(3.4×0.8+9.2×3.4)÷34÷0.05 =[3.4×(0.8+9.2)]÷34÷0.05 =[3.4×10]÷34÷0.05 =34÷34÷0.05 =1÷0.05 =20.
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答:
(1)34.67﹣28.7=5.97 验算:5.97+28.7=34.67(2)32.2÷4.2≈7.7(3)32.8×(1.88÷4.7) =32.8×0.4 =13.12(4)(21.88+29.8)÷7.6 =51.68÷7.6=6.8(5)5.2×(4.6÷0.92×0.04) =5.2×(5×0.04) =5.2×0.2 =1.04
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答:
解:3.26×4.25+5.75×3.26 =3.26×(4.25+5.75) =3.26×10 =32.6解:4.65÷(4.65×2.5) =4.65÷4.65÷2.5=1÷2.5 =0.4解:18.1﹣2.78﹣7.22 =18.1﹣(2.78+7.22) =18.1﹣10 =8.1解:4.5×9.9 =4.5×(10﹣0.1) =4.5×10﹣4.
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答:
(1)7.4×9.8-14.5 =7.4×(10-0.2)-14.5 =7.4×10-7.4×0.2-14.5 =74-1.48-14.5 =58.02(3)13.4+5.62+17.6+4.38 =(13.4+17.6)+(5.62+4.38) =31+10 =41(3)6.73×4.8+5.2×6.73 =6.73×(4.8+5.2) =6.73×10=67.3(4)8.4÷0.6+8.4&d
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