五年级数学愉快的暑假答案
2017五年级苏教版数学愉快的暑假答案
第一页:
一、3,1.2,8.7,1.26,12,417,0.4,0.24,3,0.06,15二、4.14,0.144,2.04,28
三、16.25,162.5,0.1625,42,0.42,0.42四、15.6,27.72第二页:
四、2.25,4.16,25.75,82五、4.8×3.2÷22.8×1.6=15.36÷2=4.48(平方厘米=7.68(平方厘米
(2.4+4.6×3.2÷2(8.4+11.8×7.5÷2=7×3.2÷2=20.2×7.5÷2
=11.2(平方厘米=75.75(平方厘米第三页:六、解决问题。
1、680÷4×3.2=170×3.2=544(千米2、①541.8÷15=36.12(米
②541.8÷7=77.4(米③77.4-36.12=41.28(米3、185×5.4=999(千米
4、0.8×24×18=19.2×18=345.6(元第四页:
5、324×1.2+48=388.8+48=436.8(元提高篇:1、28
2、392.6×192-39260×0.927.5×23+31×2.5=392.6×192-392.6×92=2.5×(3×23+31×2.5=392.6×(192-92=2.5×(69+31=392.6×100=2.5×100=39260=250
3、0.79×0.46+7.9×0.24+11.4×0.079=0.79×0.46+0.79×2.4+1.14×0.79=0.79×(0.46+2.4+1.14=0.79×4=3.16第五页:
1、>,<,<,<,>,>2、32.37.73、0.832.46
4、0.56×101=0.56×100+0.56×1=56+0.56=56.56
2.37×0.5×4=2.37×(0.5×4=2.37×2=4.743.7×2.5+6.3×2.5=(3.7+6.3×2.5=10×2.5=251.2×0.25=4×0.25×0.3=1×0.3=0.3
0.25×6.9×0.4=0.25×0.4×6.9=0.1×6.9=0.690.25×32×1.25=0.25×4×(8×1.25=1×10=10第六页:
5、周长(4.8+3.2×2=8×2=16(厘米面积4.8×3=14.4(平方厘米6、14.75×1.2=5.7(元
2长6×1.5=9(米9×6=54(平方米或6×1.5×6=9×6=54(平方米3(35.7+24.3×25=60×25=1500(元第七页:
415×0.45=6.75(千米6×0.9=5.4(千米6.75>5.4
答:李老师家离学校有6.75千米,用0.9小时不能到学校.52.94×23=67.62(米≈68(米
66.5×4÷2÷100×112=0.13×112=14.56(元(要把平方分米转换为平方米
第八页:
724×18.5=444(平方厘米