Vim li cas tsis zoo thiab tsis zoo yog qhov zoo?
Vim li cas tsis zoo thiab tsis zoo yog qhov zoo?

Video: Vim li cas tsis zoo thiab tsis zoo yog qhov zoo?

Video: Vim li cas tsis zoo thiab tsis zoo yog qhov zoo?
Video: zoo lawm qhov kj tsis yuav kv (ci ntsa iab )nkauj tawm tshiab 2024, Kaum ib hlis
Anonim

Thaum koj multiply a tsis zoo los ntawm a tsis zoo koj tau ib zoo ,vim ob tsis zoo cov paib raug muab tso tseg.

Hauv qhov no, qhov zoo thiab qhov tsis zoo yog dab tsi?

A zoo integer yog tus lej uas ntau tshaj 0. A tsis zoo integer yog tus lej uas tsawg dua 0. Muaj ob peb txoj cai yooj yim tsim nyog nco ntsoov thaum ntxiv thiab rho tawm ib qho kev sib xyaw. zoo thiab tsis zoo cov lej: Qhov zoo + Qhov zoo = Qhov zoo . Piv txwv li: 4 + 2 = 6.

Tom qab ntawd, lo lus nug yog, lub sijhawm zoo tsis zoo? Txoj cai rau kev sib faib thiab faib yog zoo ib yam li txoj cai rau kev ntxiv thiab rho tawm. Thaum cov cim qhia txawv cov lus teb yog tsis zoo . Thaum cov cim qhia tib yam lus teb yog qhov zoo.

Kuj Paub, vim li cas rho tawm thiab rho tawm yog ntxiv?

Daim paib ua ntej 2 qhia txog kev taw qhia rau lub ntsej muag (sab laug lossis sab xis) yog tias nws yog ntxiv fim txoj cai thiab yog tias nws yog rho tawm ntsej muag sab laug. Kos npe ua ntej 3 qhia qhov kev taw qhia uas peb yuav tsum txav mus (rov qab los yog rau pem hauv ntej), Yog tias nws yog ntxiv txav mus tom ntej thiab yog tias nws yog rho tawm txav rov qab. Yog li peb pib ntawm xoom.

Vim li cas ob qhov tsis zoo yog qhov zoo?

Txhua tus lej muaj qhov "ntxiv inverse" cuam tshuam rau nws (ib hom "tawm tsam" tus lej), uas thaum ntxiv rau tus lej qub muab xoom. Qhov tseeb hais tias cov khoom ntawm ob yam tsis zoo yog a zoo yog li ntawd muaj feem xyuam rau qhov tseeb hais tias tus inverse ntawm tus inverse ntawm a zoo tus lej yog tias zoo tus lej rov qab.

Pom zoo: