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《2012《一课一练 创新练习》5年级数学上册(人教版)参考答案.docx》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库。
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2、.(1)49.613.752(2)452.5.460.3255.73123.7.6540.0720.84.(1)20.4×1.25=25.5(67)(2)5.6×3.5=19.6($),19.6-5.6=14($),,-89:;<8=>?@A14$!4)*67891.(1)②(2)③(3)①2.>>><<<1B&B3.9.360.8844.20×0.411=8.22(67)!5)*:.;<&1.(1)6C(2)1.01DC(3)0.951.042.EFG2!#G)!3.0.438.077.44.(1)1598$(2)4.52$!6)
3、*='、'>、'?1.×8.112×98.32.0.2080.1514.563.(1)4×12×0.44=21.12(7)(2)3-3.5×0.6=0.9(6$)4.6+(12-4)×1.5=18(H),6+(12-3)×1.2=16.8(H),18>16.8,,-IJ+K24、3.2=1.8×(2.8+3.2)=1.8×6=10.8(H)!8)*67891.(1)③(2)②2.(1)√(2)×(3)√(4)√3.34.341.3654.(1)5.5×80.6+5.5×79.4=5.5×(80.6+79.4)=5.5×160=880(6$)(2)4.9+(4.9+9.8)+(4.9+9.8+9.8)=4.9×3+9.8×3=14.7×3=44.1($)+F3G9HIJK1.(1)OPQR(2)S(3)TU0(4)&P"VWXY2.Z[]^_C`#$LM1.(1)((2)9.696(3)0.513.65(5、4)>><<=>(5)8.42.(1)4.321.3525.0(2)15614.951731699.99253.1.6795.8714.(1)②(2)①5.(1)√(2)×(3)×(4)√6.76H72H180Habcdd7.0.2×2×2.75=1.1(e!)=11000(!)8.25+50×2.6=155(H)9.340×4.8÷2=816($)NO&Pfg=(0.01+0.99)+(0.02+0.98)+(0.03+0.97)+…+(0.49+0.51)+0.5=1×49+0.5=49.5!Q#$%&R(!1)*%&RS+&(6、"TUV)1.(1)20DCh2(2)141.4(3)10186(4)ijP2.1.65.31.233.23.92.41.494.6.3H!2)*%&RS+&(WXUV)1.G2!kl#Gm!klnUo“√”&B1B2.0.812.0751.013.0.161.54.(1)6$(2)0.667!3)*%&RS+&.Y5Z(1.pGm!kl#G)!klno“√”2.0.050.653.0.6251.650.064.(1)0.062670.72H(2)36.6÷6=6.1(H),47.2÷8=5.9(H),5.9<6.1,,-qrstM7、N!4)*"[&RS%&1.(1)uv(2)185.6(3)S'870292.1801.33.6.3190164.wx:yz{W《&8、}~•€》?47.5÷9.5=5(W)•yz{W《‚ƒ„…》?21.9÷7.3=3(W)!5)*67891.131.30.13180181.8572.><>1&3.0.1200.044.(1)9.3÷0.5=18.6(6$/&†)18.6÷7.5=2.48(‡)(2)ˆ‰Š‹:21.7÷7=3.1(H),Œ•ŽŠ‹:20.7÷6=3.45(H),3.1<3.45,,-Iˆ‰Š‹1.(1)②!6)*.9、;<&(2)②2.0.914.020.33.(1)2.0&†(2)2.1H1.(1)657!7)*]^%&(2)③④;①②⑤⑥;①②⑤<(4)6.0916.00(3)><·0.83(5)8.032.(1)×(2)×(3)√·····3
4、3.2=1.8×(2.8+3.2)=1.8×6=10.8(H)!8)*67891.(1)③(2)②2.(1)√(2)×(3)√(4)√3.34.341.3654.(1)5.5×80.6+5.5×79.4=5.5×(80.6+79.4)=5.5×160=880(6$)(2)4.9+(4.9+9.8)+(4.9+9.8+9.8)=4.9×3+9.8×3=14.7×3=44.1($)+F3G9HIJK1.(1)OPQR(2)S(3)TU0(4)&P"VWXY2.Z[]^_C`#$LM1.(1)((2)9.696(3)0.513.65(
5、4)>><<=>(5)8.42.(1)4.321.3525.0(2)15614.951731699.99253.1.6795.8714.(1)②(2)①5.(1)√(2)×(3)×(4)√6.76H72H180Habcdd7.0.2×2×2.75=1.1(e!)=11000(!)8.25+50×2.6=155(H)9.340×4.8÷2=816($)NO&Pfg=(0.01+0.99)+(0.02+0.98)+(0.03+0.97)+…+(0.49+0.51)+0.5=1×49+0.5=49.5!Q#$%&R(!1)*%&RS+&(
6、"TUV)1.(1)20DCh2(2)141.4(3)10186(4)ijP2.1.65.31.233.23.92.41.494.6.3H!2)*%&RS+&(WXUV)1.G2!kl#Gm!klnUo“√”&B1B2.0.812.0751.013.0.161.54.(1)6$(2)0.667!3)*%&RS+&.Y5Z(1.pGm!kl#G)!klno“√”2.0.050.653.0.6251.650.064.(1)0.062670.72H(2)36.6÷6=6.1(H),47.2÷8=5.9(H),5.9<6.1,,-qrstM
7、N!4)*"[&RS%&1.(1)uv(2)185.6(3)S'870292.1801.33.6.3190164.wx:yz{W《&
8、}~•€》?47.5÷9.5=5(W)•yz{W《‚ƒ„…》?21.9÷7.3=3(W)!5)*67891.131.30.13180181.8572.><>1&3.0.1200.044.(1)9.3÷0.5=18.6(6$/&†)18.6÷7.5=2.48(‡)(2)ˆ‰Š‹:21.7÷7=3.1(H),Œ•ŽŠ‹:20.7÷6=3.45(H),3.1<3.45,,-Iˆ‰Š‹1.(1)②!6)*.
9、;<&(2)②2.0.914.020.33.(1)2.0&†(2)2.1H1.(1)657!7)*]^%&(2)③④;①②⑤⑥;①②⑤<(4)6.0916.00(3)><·0.83(5)8.032.(1)×(2)×(3)√·····3
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