Yuav Ua Li Cas Thiaj Li Muab Cov Zauv Thiab Lawv Cov Khoom: 10 Kauj Ruam

Cov txheej txheem:

Yuav Ua Li Cas Thiaj Li Muab Cov Zauv Thiab Lawv Cov Khoom: 10 Kauj Ruam
Yuav Ua Li Cas Thiaj Li Muab Cov Zauv Thiab Lawv Cov Khoom: 10 Kauj Ruam

Video: Yuav Ua Li Cas Thiaj Li Muab Cov Zauv Thiab Lawv Cov Khoom: 10 Kauj Ruam

Video: Yuav Ua Li Cas Thiaj Li Muab Cov Zauv Thiab Lawv Cov Khoom: 10 Kauj Ruam
Video: Mob nrob qaum/ Mob duav yog vim li cas? 2024, Kaum ib hlis
Anonim

Integers yog txheej txheej ntawm tus lej, lawv tus lej tsis zoo, thiab xoom. Txawm li cas los xij, qee tus lej suav nrog tus lej, suav nrog 1, 2, 3, thiab ntxiv rau. Qhov tsis zoo yog, -1, -2, -3, thiab ntxiv rau. Yog li, cov lej yog cov lej suav nrog (… -3, -2, -1, 0, 1, 2, 3,…). Cov lej tsis yog ib feem me me, cov zauv zauv, lossis feem pua; Integers tuaj yeem yog tus lej nkaus xwb. Txhawm rau daws cov lej thiab siv lawv cov peev txheej, kawm siv cov khoom sib ntxiv thiab rho tawm thiab siv cov khoom sib npaug.

Kauj ruam

Txoj Kev 1 ntawm 2: Siv Cov Khoom Ntxiv thiab Rho Tawm Cov Khoom

Daws cov lej thiab Lawv Cov Khoom Kauj Ruam 1
Daws cov lej thiab Lawv Cov Khoom Kauj Ruam 1

Kauj Ruam 1. Siv cov khoom hloov pauv thaum ob tus lej zoo

Cov khoom ntiag tug ntawm kev hais ntxiv hais tias kev hloov qhov kev txiav txim ntawm tus lej tsis cuam tshuam rau qhov sib npaug ntawm cov zauv. Ua cov zauv raws li hauv qab no:

  • a + b = c (qhov twg a thiab b yog qhov zoo, cov lej ntawm c kuj zoo)
  • Piv txwv: 2 + 2 = 4
Daws cov lej thiab Lawv Cov Khoom Kauj Ruam 2
Daws cov lej thiab Lawv Cov Khoom Kauj Ruam 2

Kauj Ruam 2. Siv cov khoom hloov pauv yog tias a thiab b tsis zoo

Ua cov zauv raws li hauv qab no:

  • -a + -b = -c (qhov twg a thiab b yog qhov tsis zoo, koj yuav pom qhov muaj txiaj ntsig ntawm tus lej, tom qab ntawd koj npaj mus ntxiv cov lej, thiab siv cov cim tsis zoo rau qhov sib npaug)
  • Piv txwv li: -2+ (-2) =-4
Daws cov lej thiab Lawv Cov Khoom Kauj Ruam 3
Daws cov lej thiab Lawv Cov Khoom Kauj Ruam 3

Kauj Ruam 3. Siv cov cuab yeej hloov pauv thaum ib tus lej zoo thiab lwm tus tsis zoo

Ua cov zauv raws li hauv qab no:

  • a + (-b) = c (thaum koj cov ntsiab lus muaj cov cim sib txawv, txiav txim siab tus nqi ntawm tus lej loj dua, tom qab ntawd nrhiav tus nqi meej ntawm ob nqe lus thiab rho tus nqi me me los ntawm tus nqi loj dua. rau cov lus teb.)
  • Piv txwv li: 5 + (-1) = 4
Daws cov lej thiab Lawv Cov Khoom Kauj Ruam 4
Daws cov lej thiab Lawv Cov Khoom Kauj Ruam 4

Kauj Ruam 4. Siv cov khoom hloov pauv thaum ib qho tsis zoo thiab b yog qhov zoo

Ua cov zauv raws li hauv qab no:

  • -a +b = c (nrhiav qhov muaj txiaj ntsig ntawm tus lej, thiab ntxiv, txuas ntxiv mus kom rho tus nqi me me los ntawm tus nqi loj dua thiab siv kos npe ntawm tus nqi loj dua)
  • Piv txwv li: -5 + 2 = -3
Kev daws cov lej thiab Lawv Cov Khoom Kauj Ruam 5
Kev daws cov lej thiab Lawv Cov Khoom Kauj Ruam 5

Kauj Ruam 5. Nkag siab txog tus kheej ntawm kev ntxiv thaum ntxiv cov lej nrog xoom

Cov lej ntawm ib tus lej twg thaum ntxiv rau xoom yog tus lej nws tus kheej.

  • Ib qho piv txwv ntawm tus kheej yog: a + 0 = a
  • Ua lej, qhov sib ntxiv ntawm tus kheej zoo li: 2 + 0 = 2 lossis 6 + 0 = 6
Kev daws cov lej thiab Lawv Cov Khoom Kauj Ruam 6
Kev daws cov lej thiab Lawv Cov Khoom Kauj Ruam 6

Kauj Ruam 6. Paub tias kev ntxiv qhov sib thooj ntawm qhov ntxiv yields xoom

Thaum koj ntxiv cov lej sib thooj ntawm tus lej, qhov tshwm sim yog xoom.

  • Kev hloov pauv ntawm qhov ntxiv yog thaum tus lej raug ntxiv rau tus lej tsis zoo uas sib npaug nrog tus lej nws tus kheej.
  • Piv txwv li: a + (-b) = 0, qhov twg b yog sib npaug rau a
  • Ua lej, qhov sib thooj ntawm qhov sib ntxiv zoo li: 5 + -5 = 0
Kev daws cov lej thiab Lawv Cov Khoom Kauj Ruam 7
Kev daws cov lej thiab Lawv Cov Khoom Kauj Ruam 7

Kauj Ruam 7. Nkag siab tias cov cuab yeej sib koom ua ke hais tias kev sib sau cov lej ntxiv tsis hloov pauv qhov sib npaug

Qhov kev txiav txim uas koj ntxiv tus lej tsis cuam tshuam rau qhov tshwm sim.

Piv txwv li: (5+3) +1 = 9 muaj cov lej zoo ib yam li 5+ (3+1) = 9

Txoj Kev 2 ntawm 2: Siv Cov Khoom Sib Thooj

Kauj Ruam 1. Nkag siab tias cov cuab yeej sib koom ua ke ntawm kev sib npaug txhais tau tias qhov kev txiav txim uas koj muab sib npaug tsis cuam tshuam rau cov khoom ntawm cov zauv

Kev sib tw a*b = c kuj zoo ib yam li kev sib tw b*a = c. Txawm li cas los xij, qhov kos npe ntawm cov khoom tuaj yeem hloov pauv nyob ntawm cov cim ntawm tus lej qub:

  • Yog tias a thiab b muaj tib lub cim, tom qab ntawv kos npe ntawm cov khoom yog qhov zoo. Piv txwv li:

    Daws cov lej thiab Lawv Cov Khoom Kauj Ruam 8Bullet1
    Daws cov lej thiab Lawv Cov Khoom Kauj Ruam 8Bullet1
    • Thaum a thiab b yog tus lej zoo thiab tsis sib npaug rau xoom: +a * +b = +c
    • Thaum a thiab b yog tus lej tsis zoo thiab tsis sib npaug rau xoom: -a * -b = +c
  • Yog tias a thiab b muaj cov cim sib txawv, tom qab ntawv kos npe ntawm cov khoom tsis zoo. Piv txwv li:

    • Thaum qhov zoo thiab b tsis zoo: +a * -b = -c

      Daws cov lej thiab Lawv Cov Khoom Kauj Ruam 8Bullet2
      Daws cov lej thiab Lawv Cov Khoom Kauj Ruam 8Bullet2
  • Txawm li cas los xij, nkag siab tias txhua tus lej sib npaug los ntawm xoom sib npaug xoom.

Kauj Ruam 2. Nkag siab tias qhov sib npaug ntawm tus lej ntawm cov lej suav hais tias txhua tus lej sib npaug sib npaug 1 sib npaug ntawm tus lej nws tus kheej

Tshwj tsis yog tus lej yog xoom, txhua tus lej sib npaug ntawm 1 yog tus lej nws tus kheej.

  • Piv txwv li: a*1 = a
    Daws cov lej thiab Lawv Cov Khoom Kauj Ruam 9Bullet1
    Daws cov lej thiab Lawv Cov Khoom Kauj Ruam 9Bullet1
  • Nco ntsoov, txhua tus lej sib npaug los ntawm xoom sib npaug xoom.

    Daws cov lej thiab Lawv Cov Khoom Kauj Ruam 9Bullet2
    Daws cov lej thiab Lawv Cov Khoom Kauj Ruam 9Bullet2
Kev daws cov lej thiab Lawv Cov Khoom Kauj Ruam 10
Kev daws cov lej thiab Lawv Cov Khoom Kauj Ruam 10

Kauj Ruam 3. Paub txog cov khoom faib khoom ntawm kev sib npaug

Cov khoom faib ntawm kev sib npaug hais tias txhua tus lej "a" sib npaug los ntawm qhov sib npaug ntawm "b" thiab "c" hauv kab lus sib xws yog tib yam li "a" times "c" plus "a" times "b".

  • Piv txwv li: a (b + c) = ab + ac
  • Ua lej, cov khoom no zoo li: 5 (2 + 3) = 5 (2) + 5 (3)
  • Nco tseg tias tsis muaj cov cuab yeej thim rov qab rau kev ua lej vim hais tias qhov rov qab ntawm tag nrho cov lej yog ib feem, thiab cov lej tsis yog cov ntsiab lus ntawm tag nrho cov lej.

Pom zoo: