Thiab yog tias lwm lub ncuav qab zib (qhov loj tib yam) txiav rau hauv 4 daim sib npaug, ces ob daim ntawm lub ncuav ntawd sawv cev rau tib lub ncuav uas 1/2 tau ua. Yog li peb hais tau tias 1/2 yog sib npaug (los yog sib npaug) rau 2/4. Tsis txhob cia qhov sib npaug sib npaug cuam tshuam rau koj!
pes tsawg yog 2 4 sib npaug rau?
Factions sib npaug rau 2/4: 4/8, 6/12, 8/16, 10/20 thiab lwm yam … Fractions sib npaug rau 3/4: 6/ 8, 9/12, 12/16, 15/20 thiab lwm yam … Feem ntau sib npaug rau 1/5: 2/10, 3/15, 4/20, 5/25 thiab lwm yam … Cov seem sib npaug rau 2/5: 4/10, 6/15, 8/20, 10/25 thiab lwm yam …
Qhov sib npaug ntawm ½ yog dab tsi?
Teb: Cov feem uas sib npaug rau 1/2 yog 2/4, 3/6, 4/8, 6/12 thiab lwm yam.
Koj pom cov feem sib npaug li cas?
Yuav kom pom cov feem sib npaug rau ib feem ntawm qhov muab, muab tus lej thiab tus lej los ntawm tib tus lej Piv txwv li, txhawm rau nrhiav qhov sib npaug ntawm 3/4, muab cov lej sib npaug. tus lej 3 thiab tus denominator 4 los ntawm tib tus lej, hais, 2. Yog li, 6/8 yog ib feem sib npaug ntawm 3/4.
2/4 yog dab tsi?
Teb: 2/4 as a decimal is equal to 0.5.
