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时间:2020-01-20
《2015五年级数学((上)寒假作业.doc》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、五年级数学(上)寒假作业寒假第一、二天作业直接写出得数。1.5×4=5.8+1.2=45×0.2=4.08÷8=0.54÷0.6=3.1-2.9=0.12÷3=0.4×0.7=0.32×1000=7÷100=0.8+0.02=0.84÷0.3=3.68÷0.01=9+1.5=0.4×0.5=0.44+0.6=2.5×0.4=0.125×8=3.6÷0.4=3.92+7.2=竖式计算。(第(3)(5)题得数保留一位小数,第(6)题要验算。)(1)7.6×0.9(2)10.5×0.3(3)4.25×0.18(4)0.3÷0.12(5)104.78÷26(6)34.2÷0.8脱式计算,
2、能简算的要简算。新课标第一网8.7×10.17.06×2.4-5.76.35÷0.8÷1.252.5×6.8×0.42.5×3.2×1.2521.36÷0.8×2.9家长检查并签字:年月日寒假第三、四天作业102×0.458.27+7.52+1.73-3.520.79×99+0.790.15+0.75×1872+8÷2.5-30.22.8×3.2+3.2×7.2解下列方程。5.5+X=8X-6=8.43X=2.70.4X=16X÷7=0.311X=1.19X÷4=1353X-1.6=32.61.5×30-5X=102X+1.5X=42(X-3)÷2=7.58(X-6.2)=41.
3、6家长检查并签字:年月日寒假第五、六天作业2X+2.8×2=10.42(X-2.6)=8X+2.4X=5.15X+3X=33.6X-0.36X=165.4X+X=12.8口算下列各题:25×3=24÷6=0.16×5=1.78×0.2=2.5×3=2.4÷6=1.2×5=0.7×0.01=2.5×0.3=2.4÷0.6=75÷10=0.7÷0.01=2.5×0.03=2.4÷0.06=2.37+3.7=3.54+6.46=2.5×0.4=125×0.8=25×8=9.6×0.6=5.6×3=2.82+3.18=44÷11=1.5+0.25=0.31×3=33÷10=10.8÷1=
4、9.08×0+9=0.1×0.1=1.5+0.25=6.08×1000=0.5+1÷1+0.5=6.4÷4=1.5÷0.3=4.2×3=1.8×5=2-1.75=10.6-2.7=1.6×0.25=0.25×4×1.2=2.05+0.75=8.4÷0.4=2.3÷0.1=4.2×15×0=4.5÷0.5=7.2÷0.8=3-0.98=8.95÷0.895=家长检查并签字:年月日3.8×0.01=6×0.25=0.01×10=0.1+0.1×99=4.2÷3=2.5×1.2=100-60.8=寒假第七、八天作业4.5×80=19.6-1.8=728÷7=13.5÷5=56÷4=72
5、÷16=72÷12=48÷2=5.6÷4=7.2÷16=7.2÷12=4.8÷2=0.14×0.3=1.8×0.5=102×5=51÷17=1.2-0.02=3.8+4.9=0÷3.5=3.5÷3.5=9.2-8.6=10.1-8.1=18×0.2=10×0.05=3.4×0.3=20÷100=1.8÷6=3.59-1.9=1.25×0.8=0.42÷0.7=1.5÷5=5.1÷0.3=2.3×0.4=5.6+5.4=0.25×4=6.36-2.6=列竖式计算。3.5×16=0.19×7.5=0.48×1.7验算:7.525÷0.38=78.6÷11=227.8÷0.34=(得数
6、精确到百分位)(得数用循环小数表示)验算:计算下列各题。(能简算的要简算,并写出主要过程)5.65×1.8+4.35×1.82.5×1.25×3.2家长检查并签字:年月日寒假第九、十天作业9.76×0.72-0.76×0.72+0.7212.6×990.84÷7+0.36×8新课标第一网23.4÷7.8-2.35.4+4.6×1590÷25÷463×10.1解方程。1.8x=72x÷5.4=1.2x-32.5=94x+4.2=14.816+8x=404x-3×9=293.6x-0.8x=26.61.2x÷2=1202(3+x)=9.20.85(x-6)=5.10.5x+0.8x=
7、0.395.4x+x=12.8家长检查并签字:年月日寒假第十一、十二天作业列竖式计算:36×5.5 18×3.06 3.45×210.28×0.25150×0.120.87×1.5 0.4×0.076 1.5×0.062 6.5×0.04计算下面各题,怎样算简便就怎样算。28.3×0.1×2.758.36×0.5+18.21.01×8.50.79×98+0.79×20.48×1.250.25×5.8×0.4列竖式计算:52.78÷26=3.81÷75.87÷1.9验算:(得数
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