小学数学五年级上册寒假作业答案2017

1、苤悝杅悝拻爛撰奻聊漁樑釬珛湘偶2017 菴珨珜:珨3 1.2 8.7 1.26 124170.4 0.24 3 0.0615媼4.140.1442.04 2816.25162.5 0.1625,42 0.42 0.42侐15.627.72菴媼珜侐2.254.16 25.7582拻4.83.22 2.81.6=15.362 =4.48(源濰譙)=7.68(源濰譙)(2.4+4.6)3.22(8.4+11.8)7.52=73.22=20.27.52=11.2(源濰譙) =75.75(源濰譙)菴珜鞠賤樵恀枙1 68043.2=1703.2=544(譙)2 541.815= 36.12(譙) 541.

2、87= 77.4 (譙) 77.4-36.12=41.28 (譙)31855.4= 999(譙)40.82418=19.218=345.6(啋)菴侐珜53241.2+48=388.8+48=436.8(啋)枑詢1282 392.6192-392600.927.523+312.5=392.6192-392.692=2.5(323)+312.5=392.6(192-92)=2.5(69+31)=392.6100 =2.5100=39260=2503 0.790.46+7.90.24+11.40.079=0.790.46+0.792.4+1.140.79=0.79(0.46+2.4+1.14)=0.

3、794=3.16菴拻珜1232.37.730.832.4640.56101 =0.56100+0.561=56+0.56=56.562.370.54=2.37(0.54)=2.372=4.743.72.5+6.32.5=(3.7+6.3)2.5=102.5=251.20.25=40.250.3=10.3=0.30.256.90.4=0.250.46.9=0.16.9=0.690.25321.25=0.254(81.25)=110=10菴鞠珜5笚酗(4.8+3.2)2=82=16(濰譙)醱儅 4.83=14.4(源濰譙)61) 4.751.2=5.7(啋)2) 酗 61.5=9(譙)96=54(

4、源譙)麼61.56=96=54(源譙)3) (35.7+24.3)25=6025=1500(啋)菴珜:4) 150.45=6.75(譙)60.9=5.4(譙)6.755.4湘:燠橾呇模燭悝苺衄6.75譙,蚚0.9苤奀祥夔善悝苺.5) 2.9423=67.62(譙)68(譙)6) 6.542100112=0.13112=14.56(啋) (猁參源煦譙蛌遙峈源譙)菴匐珜:7)2418.5=444(源濰譙)8)4.81.52=7.22=3.6 (源濰譙)(2.7+6.3)52=452=22.5(源煦譙)9)1020+(12-10)(20-14)2=200+6=206(源濰譙)(源楊嗣笱)枑詢:1樅杅

5、腔苤杅萸砃衵痄雄珨弇憩脹衾眣杅佽隴眣杅岆樅杅腔10捷賤扢樅杅岆x寀眣杅岆10x10x-x=7.02賤腕x=0.7810x=7.8麼珂樅杅7.02(10-1)=0.78婬眣杅7.02+0.78=7.8210.55+11.34-9.38=52.5+45.2-74.4=23.33歙藩勛撓跺93=3(跺)樅嗣葆撓跺醱婦5-3=2(跺)藩跺醱婦嗣屾1.23=0.4(啋)樅茼彶隙杅0.42=0.8(啋)菴嬝珜18,6 ,60.8,6,0.60.8,6,0.680,0.6,620.45454503飲渣賸,菴珨枙茼腕0.07,菴媼枙茼腕2.5.419, 6.7,1.28,9 , 570,1.6,菴10珜:35

6、,11590 50.8,15,0.86籟騷等歎1.65籟等歎:11.50赶杅講1.6粥詹磁數15.80磁數茼彶55.00梑隙45.00菴11珜167.24=16.8(啋)2410.55=82.1(譙/奀)345.67.6=6(勣)43.70.410(跺)菴12珜:5430.62417(杶)430.6-2415=430.6-360=70.6(啋)70.6213(杶)枑詢:1 0.99990.7+0.11112.7=0.99990.7+0.99990.3=0.9999(0.7+0.3)=0.99991=0.9999(3.44.89.5)(1.91.72.4)=(3.41.7)(4.82.4)(9.51.9)=225=202 0.479.4=0.05 1.54-0.31=1.231.23+0.05=1.28源遺笢沓1.2844.9+(4.9+9.8)+(4.9+9.82)+ +(4.9+9.89)=4.910+9.8(1+2+9)=49+441=490(譙)菴13珜:1衄癹苤杅:5.0101 , 3.4567 , 5.0461111 ,8.9 ,9.876543 , 3.999. . . .悜遠苤杅:4.1 6,8.7,8. 6 9, 0.9232323,2.959595拸癹祥悜遠苤杅:3.4567892 0.168125,0.18,3 筵覂艘菴23