Cov txheej txheem:
Video: Koj ua haujlwm li cas ntxiv cov feem?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Ntxiv Fractions
- Kauj Ruam 1: Xyuas kom tseeb tias cov lej hauv qab (tus lej) yog tib yam.
- Kauj ruam 2: Ntxiv cov lej saum toj kawg nkaus (tus lej), muab cov lus teb ntawd hla tus lej.
- Kauj ruam 3: Simplify lub feem (yog xav tau)
Ib yam li ntawd, koj yuav ua li cas ntxiv cov feem nrog cov lej sib txawv?
Yog tias denominators tsis zoo ib yam, ces koj yuav tsum siv sib npaug ib feem uas muaj ib tug common tus lej . Txhawm rau ua qhov no, koj yuav tsum nrhiav qhov tsawg tshaj plaws commonmultiple (LCM) ntawm ob denominators . Rau ntxiv fractionswith tsis zoo li tus denominators , rename cov ib feem nrog acommon tus lej . Ces ntxiv thiab ua kom yooj yim.
Tom qab ntawd, lo lus nug yog, ua li cas koj ntxiv ib feem rau tag nrho tus lej? Koj ua tau ntxiv a tus lej thiab ib txoj cai feem los ntawm kev sib txuas ua ke ntawm ob lub ntsiab lus. Rau ntxiv a tus lej thiab ib qho tsis tsim nyog feem , koj yuav tsum hloov lub tus lej mus rau qhov tsis tsim nyog feem , nrhiav ib tus denominator, ces ntxiv tus ib feem.
Ib yam li ntawd, nws tau nug, koj yuav daws qhov sib npaug nrog cov feem ntau li cas?
daws qhov sib npaug los ntawm kev tshem cov Denominators
- Nrhiav qhov tsawg tshaj plaws denominator ntawm tag nrho cov feem nyob rau hauv qhov kev ua zauv.
- Muab ob sab ntawm qhov sib npaug los ntawm qhov LCD.
- Cais cov ntsiab lus sib txawv ntawm ib sab, thiab cov ntsiab lus tas mus li ntawm lwm sab.
- Simplify ob sab.
Yuav ua li cas koj thiaj nrhiav tau ib tus lej?
Nov yog cov kauj ruam ua raws li:
- Nrhiav qhov tsawg tshaj plaws ntau yam ntawm cov denominators (uas yog hu ua Least Common Denominator).
- Hloov txhua feem (siv cov feem sib npaug) ua kom lawv cov lej zoo ib yam li tus lej tsawg tshaj plaws.
- Tom qab ntawd ntxiv (lossis rho tawm) cov feem, raws li peb xav tau!
Pom zoo:
Yuav ua li cas koj hloov cov units rau feem feem?
Summary Sau qhov hloov dua siab tshiab raws li ib feem (uas sib npaug ib) Muab nws tawm (tso tawm txhua chav nyob rau hauv cov lus teb) Ncua tseg tej units uas yog ob sab saum toj thiab hauv qab
Yuav ua li cas koj sau ib feem raws li ib tug khoom ntawm ib tug tag nrho cov zauv thiab ib feem feem?
Cov cai los nrhiav cov khoom ntawm ib feem feem thiab tag nrho tus lej Peb xub sau tag nrho cov lej ua ib feem, piv txwv li, sau nws faib los ntawm ib qho; Piv txwv li: 7 yog sau ua 71. Peb mam li muab cov zauv. Peb muab cov denominators. Yog tias yuav tsum tau ua kom yooj yim, nws ua tiav thiab tom qab ntawd peb sau cov feem kawg
Yuav ua li cas koj txheeb xyuas cov kev sib txuas ntxiv thiab cov kab ntsug?
Cov kaum sab xis yog ob lub kaum sab xis nrog qhov sib npaug ntawm 90º. Cov ces kaum ntxiv yog ob lub kaum sab xis nrog qhov sib npaug ntawm 180º. Vertical angles yog ob lub kaum sab xis uas nws ob sab tsim ob khub ntawm opposite rays. Peb tuaj yeem xav txog cov no yog cov kaum sab xis uas tsim los ntawm X
Dab tsi yog cov ntawv ua haujlwm ntxiv thiab sib txuas ntxiv?
X thiab y yog cov kaum sib npaug. Muab x = 35˚, nrhiav tus nqi y. Dab tsi yog Qhov Sib Txuas Ntxiv? Ob lub kaum sab xis yog hu ua cov ces kaum ntxiv yog tias qhov sib npaug ntawm lawv qhov ntsuas ntsuas sib npaug 180 degrees (txoj kab ncaj nraim)
Yuav ua li cas koj ntxiv rho tawm ntau thiab faib cov feem thiab cov zauv sib xyaw?
Cov zauv sib xyaw thiab cov zauv tsis zoo Muab cov zauv los ntawm tag nrho cov lej. Ntxiv cov khoom rau tus lej. Tus lej no yuav yog tus lej tshiab. Tus denominator ntawm qhov tsis tsim nyog feem yog tib yam li tus denominator nyob rau hauv thawj cov zauv sib xyaw