Koj puas tau hnov ​​txog MMC? Thaum peb pib kawm txog plaub qhov kev ua haujlwm ntawm kev ua lej, cov ncauj lus no tau pom txij thaum pib, tab sis MMC yog dab tsi thiab nws yog dab tsi? Koj tuaj yeem qhia rau kuv, koj xav li cas pom me ntsis ntxiv txog cov ncauj lus no?

Qhov tsawg tshaj plaws ntawm ntau qhov, paub ntau dua MMC, yog qhov tsawg tshaj plaws ntawm cov sib txuam uas ib txwm muaj rau ob los sis ntau dua ntawm cov naj npawb, nrog rau qhov tsis suav ntawm tus lej. Rau xoom nws yog cov me tshaj ntawm cov lej ntawm ntuj thiab yog ntau yam ntawm lawv.

Sib txuam ntawm cov zauv ntawm lub ntuj.

Thaum tus lej muab tau los ntawm lwm qhov thiab tus lej ntawd nws txawv ntawm xoom, peb hais tias nws yog ntau ntawm cov ntawm lwm qhov. Thiab txhawm rau nrhiav cov zauv sib tshooj ntawm ib tus lej, tsuas yog suav nrog tus lej ntawd siv tus naj npawb lej. Saib tus piv txwv:

Luas = 5 × 0, 5 × 1, 5 × 2, 5 × 3, 5 × 4, 5 × 5… = 0, 5, 10, 15, 20, 25…

Nco ntsoov tias tus lej muaj infinities thiab tus xoom yuav ib txwm yog ntau ntawm ib qho lej keeb kwm.

Muab xam los ntawm LCM (tsawg kawg ib qho sib txuam)

Tam sim no koj paub paub nrhiav cov zauv sib ntxiv ntawm cov naj npawb ntawm ntuj, cia saib seb yuav pom qhov tsawg tshaj ntawm cov ntawm ob lossis ntau dua ntawm cov naj npawb ntuj.

Cia peb saib cov lej 4 thiab 8. Ua ntej peb yuav pom lawv cov lej sib tshooj li cas:

4 = {0, 4, 8, 12, 16, 20, 24, 28, 32 ...}

8 = {0, 8, 16, 24, 32, 40, 48, 56, 62 ...}

Nco ntsoov tias tsis suav tus xov tooj 0, muaj lwm tus lej hauv qhov zoo rau ob qho, xws li 8, 16, 24, 32 thiab lwm yam. Thiab qhov tsawg tshaj plaws ntawm lawv yog tus naj npawb 8, yog li peb tuaj yeem hais tias MMC (tsawg kawg ib qho sib txuam) ntawm tus lej 4 thiab 8 yog tus lej 8.

Laij lub LCM ntawm kev teeb tsa cov naj npawb

Thaum peb xav suav qhov tsawg tshaj plaws ntawm peb lossis ntau dua ntawm cov naj npawb ntuj, peb siv lub ntsiab lus, vim nws yog qhov yooj yim thiab nrawm tshaj plaws los nrhiav qhov tshwm sim no. Saib qhov piv txwv ntawm cov naj npawb raug suav yuam kev li cas:

Peb muaj cov lej 15, 24 thiab 60. Tam sim no cia peb ua qhov tseeb thiab nrhiav kom paub dab tsi tsawg tshaj plaws sib txuam ntawm lawv yog.

Nco ntsoov tias txhua tus lej tau ploj mus tib lub sijhawm. Lub LCM nruab nrab ntawm cov naj npawb no yuav yog cov sib npaug ntawm cov zauv tseem ceeb: 2 x 2 x 2 x 3 x 5 = 120 (23 x 3 x 5 = 120). Yog li peb muaj qhov LCM (15, 24, 60) = 120.