ʱ : 六年级下册数学试?小升?填空题练? 人教新课?2014?(含答? - 百度文库ϿʼĶ
ȻݱȺͷĹϵȵǰ൱ڷӣ൱ڷĸֵ൱ڷֵݴ˷. 39.𰸡 8
㡿Բݻ ˮ 10106.28 =1006.28 =628ף 102=5ף 3.1452 =3.1425
=78.5ƽף 62878.5=8ף ʴΪ8.
֪ˮҳĵˮ=ˮеˮȫ ˵ˮ䣬ȻԲĵˮ¼Բĵ=Բˮȣݴʽ 40.𰸡 1321
㡿ƽıεεԲԲĹϵ
ȵȸߵԲԲı13һκһƽıȣҲȣεĸߺƽıεĸߵı21. ʴΪ1321.
ȵȸߵԲԲģ ݴǵȣ
ε=ס2ƽıε=סߡ¸ߣһκһƽıȣҲȣεĸߺƽıεĸߵı21ݴ˽. 41.𰸡 5785
㡿ԲIJԲݻ 3=31.4ף Բĵܳ94.2 뾶 31.43.142 =102
=5ף Բĸߣ 10025 =505 =10ף Բ 3.145210 =3.142510 =78.510
=785ף. ʴΪ5785.
֪һԲĸ߽ض3ףͼ1)ͼ˸3Բñٵ¸=ԲĵܳȻԲĵܳ2¦=Բĵ뾶
ԭԲƽֳ16ݺƴһƵij壨ͼ2ͱԭ2εijԲĸߣԲĵ뾶ӵµ뾶=ԲĸߣȻùʽV=r2hݴʽԲ. 42.𰸡 450
㡿ӦñͼϾʵʾ 3 ʴΪ450
ͼϾ±=ʵʾ룻ǧףСƶλ 43.𰸡 637.68
㡿εԲݻ 42=6ƽף 3
3.143243=3.14363=37.68ף 3.144233=3.1416=50.24ף γͼεС 37.68ס ʴΪ637.68
=315000000=45000000ף45000000=450ǧס
345պһֱΣֱDZ34=ֱDZ2 Ļ
תʱԲһǵ뾶34һǵ뾶433ֱѡСǸ Բ=ߡ44.𰸡 78.5
㡿εܳԲ
223.14=5ף3.1455=78.5ƽף 15.7 ʴΪ78.5
2=ԲܳԲܳ2=Բİ뾶С=εijԲܳһ룬뾶2Բ 45.𰸡 4
㡿Ļ 0.5=4 𡿽⣺2 ʴΪ4
ڱĻĻĻҲ2Ļһһ 46.𰸡 23040
㡿СĻٷСĻٷӦ--Ĺϵ
𡿽⣺0.4= ʴΪ23040ġ
Сдɷĸ10ķȻݷ֮ĹϵȷӺͺȻСɰٷٸݰٷȷ 47.𰸡 12
㡿ԲݻԲݻȵӦ С1025=𡿽⣺ɵ ǣ ʴΪ12
ɵһԲɵһԲȥͼεдȼɡ
УС1025-ɵ
=
У
=1230=40%=ijɡ
48.𰸡 501 㡿ߵʶ
𡿽⣺10=100ףߣ1002=501 ʴΪ501
ͼϾ뻻ɺףȻдͼϾʵʾıȲɺ1ıȼɡ
49.𰸡 251.2
㡿ԲIJƴ
210=4ף3.144210=251.2ƽ𡿽⣺뾶80ף
ʴΪ251.2
ƴɵijıԭԲıεεijԲĵ뾶ԲĸߣñӵIJֳ2һٳ10뾶õܳ˸ԲIJɡ 50.𰸡 324
㡿ԲݻԲݻ 166=32ף 𡿽⣺ԲV= Բĸh=328=4ף ʴΪ324
ԲʽV=ߴݽɣԲĸh=µݽɡ