Cov txheej txheem:
Video: Yuav ua li cas koj daws qhov sib npaug thiab faib cov feem?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Multiplying thiab Dividing Fractions
- Kauj ruam 1: Ntau tus lej ntawm txhua tus feem ntawm ib leeg (cov lej saum toj). Qhov tshwm sim yog tus lej ntawm cov lus teb.
- Kauj ruam 2: Ntau tus denominators ntawm txhua tus feem los ntawm ib leeg (cov lej hauv qab). Qhov tshwm sim yog tus denominator ntawm cov lus teb.
- Kauj Ruam 3: Ua kom yooj yim los yog txo cov lus teb.
Xav txog qhov no, koj puas hla kev sib faib thaum faib cov feem?
Method 1 rau faib feem : Hla - kev sib npaug Txoj kev no suav nrog kev sib npaug tus lej ntawm thawj feem los ntawm tus denominator thib ob feem thiab tom qab ntawd sau cov lus teb hauv qhov tshwm sim feem tus lej.
Ib sab saum toj no, ua li cas koj faib cov feem ntawm kauj ruam? Hauv kev txiav txim, cov kauj ruam yog:
- Cia thawj feem hauv qhov sib npaug ib leeg.
- Tig lub division kos npe rau hauv ib tug multiplication sign.
- Tig qhov thib ob feem ntau dua (nrhiav nws qhov sib txuam).
- Muab cov zauv (cov lej saum toj kawg nkaus) ntawm ob feem ua ke.
- Muab cov denominators (cov lej hauv qab) ntawm ob feem ua ke.
Tsis tas li ntawd, koj yuav muab faib li cas?
Rau muab ntau ntau los yog faib kos npe integers, ib txwm muab ntau ntau los yog faib qhov tseem ceeb thiab siv cov cai no los txiav txim qhov kos npe ntawm cov lus teb. Thaum koj muab ntau ntau ob tus lej nrog tib cov cim, qhov tshwm sim yog ib txwm zoo. Tsuas yog muab ntau ntau qhov tseem ceeb thiab ua kom cov lus teb zoo.
Dab tsi yog cov cai rau kev faib cov feem?
Nov yog Txoj Cai rau Division
- Hloov lub “÷” (cim faib) mus rau “x” (muab kos npe) thiab hloov tus lej mus rau sab xis ntawm kos npe.
- Ua ntau tus lej.
- Ua ntau tus denominators.
- Rov sau koj cov lus teb rau hauv nws daim ntawv yooj yim lossis txo qis, yog tias xav tau.
Pom zoo:
Yuav daws qhov tsis sib npaug ntawm cov kab sib npaug thiab cov kab sib npaug sib npaug li cas?
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Koj yuav ua li cas thiaj daws tau qhov sib npaug ntawm qhov tsis sib xws?
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