Piv txwv li: Hloov 2.625 mus rau ib feem
Txo peb tau 5/8.
Ntawm no, Dab tsi yog 4.25 raws li ib feem? 4.25 yog sib npaug rau 4 1/4 los yog 17/4.
Dab tsi yog 1/8 ua tus lej lej? Txhawm rau hloov 1/8 mus rau tus lej, faib tus lej rau hauv tus lej. 1 faib ua 8 = . 125. Hloov cov zauv.
Tsis tas li ntawd Dab tsi yog 0.625 simplified? Teb: 0.625 raws li ib feem yog 625/100 uas tuaj yeem txo qis rau 5/8.
Yuav ua li cas hloov ib tug decimal rau feem? Hloov Hloov Pauv Kev Txiav Txim rau Feem
- Kauj Ruam 1: Sau cia tus lej faib faib 1, zoo li qhov no: lej 1.
- Kauj ruam 2: Muab ob sab saum toj thiab hauv qab los ntawm 10 rau txhua tus lej tom qab tus lej lej. …
- Kauj ruam 3: Ua kom yooj yim (lossis txo qis) cov feem.
Koj yuav sau 4.20 li ib feem twg?
Thaum kawg peb yuav cia li yooj yim qhov feem ntawm no rau nws daim ntawv txo. Yog li, peb cov lus teb kawg yog: $ 4.20 $ tuaj yeem sau rau hauv daim ntawv feem ntau $dfrac{{21}}${5} . Yog li, cov lus teb raug yog “$dfrac{{21}{5}$”.
4.5 yog dab tsi? Txhua tus lej hauv daim foos lej, uas yog tus lej txiav tawm lossis qee tus lej tom qab tus lej lej txuas ntxiv rov ua tsis tiav, tuaj yeem sau ua feem. Raws li tus naj npawb 4.5 xaus tom qab thawj tus lej nws tuaj yeem sau ua feem. Ntawm no peb muaj 4.5 = 4510 =92 ib fq.
Dab tsi yog 7.5 raws li ib feem? Teb: 7.5 raws li ib feem yog 15/2.
Koj yuav sau li cas 1/10 li feem pua?
Piav qhia:
- Luas = 110 x 100.
- 10 x = 100.
- x = 10.
- 10%
Kuj Yuav ua li cas koj sau 1/8 ua ib feem? 18 = ib0.125 .
Koj sau li cas .8 ua ib feem?
Kev piav qhia: Yog tias koj xav txog qhov lej no li 0.81 ces koj tuaj yeem muab cov saum toj thiab hauv qab los ntawm kaum thiab tau 810 kom yooj yim cov feem no koj tuaj yeem faib cov sab saum toj thiab hauv qab los ntawm lawv cov lcd (tsawg kawg denominator) uas yog 2. 82 = 4 thiab 102 = 5 x 810 = 45.
Dab tsi yuav tsum tau siv los ua tus denominator los hloov 0.625 rau daim ntawv feem? Li no, daim ntawv yooj yim tshaj plaws ntawm cov feem uas tau los ntawm tus lej 0.625 yog 5/8.
Dab tsi yog qhov tshwm sim Thaum peb hloov 0.625 rau hauv ib feem hauv nws daim ntawv yooj yim tshaj plaws?
Hauv daim ntawv yooj yim tshaj plaws, 0.625 yog 5/8 raws li ib feem.
Yuav ua li cas koj tig .0625 mus rau hauv ib feem?
Teb: 0.0625 raws li ib feem yog 1/16.
Yuav ua li cas koj tig 0.25 mus rau ib feem? Teb: 0.25 raws li ib feem yuav sau li 1/4.
Cia peb hloov 0.25 mus rau ib feem. Kev piav qhia: 0.25 yuav tsum xub nthuav tawm hauv daim ntawv feem ntau li 25/100 los ntawm kev faib thiab muab 100 nrog ob tus lej thiab tus lej. Thaum 25/100 yog qhov yooj yim dua thiab muab faib, qhov tshwm sim yog 1/4.
Yuav ua li cas koj tig 0.5 mus rau ib feem? Teb: 0.5 raws li ib feem yog sau li 1/2.
Koj yuav sau 0.75 li ib feem twg?
Teb: 0.75 tuaj yeem hais tau 3/4 nyob rau hauv daim ntawv ntawm ib feem.
1 Repeating li ib feem yog dab tsi? Common Repeating Decimals thiab lawv cov feem sib npaug
Rov Ua Dua | Sib Xws |
---|---|
0.1666 ... | 1/6 |
0.8333 ... | 5/6 |
0.1111 ... | 1/9 |
0.2222 ... | 2/9 |
Koj sau li cas 75 feem pua ntawm ib feem?
Yuav ua li cas koj tig 10.5 mus ua feem me me? Cov kauj ruam los hloov decimal rau hauv feem
- Sau 10.5 as 10.51.
- Luas = 10.5 x 101 x 10 = 10510.
- 212.
Dab tsi yog 2.4 yog ib feem?
Teb: 2.4 raws li ib feem yog 24/10 uas tuaj yeem txo qis rau 12/5.
Kuv yuav tig mus rau hauv ib feem? Txhawm rau hloov tus lej rau hauv ib feem, koj muab cov lej mus rau sab xis ntawm tus lej lej hauv tus lej (sab saum toj ntawm kab lus). Tom ntej no, koj tso tus lej 1 rau hauv tus lej, thiab tom qab ntawd ntxiv ntau tus lej raws li tus lej muaj lej. Txo cov feem ntau yog tias xav tau.