Dab tsi yog tsev neeg qhov tseeb hauv lej qib 2?
Dab tsi yog tsev neeg qhov tseeb hauv lej qib 2?

Video: Dab tsi yog tsev neeg qhov tseeb hauv lej qib 2?

Video: Dab tsi yog tsev neeg qhov tseeb hauv lej qib 2?
Video: Dab tsi yog qhov tseeb txog cov tshuaj tiv thaiv COVID-19? 2024, Kaum ib hlis
Anonim

A tsev neeg tseeb yog ob kab lus ntxiv thiab ob kab lus rho tawm uas txhua tus siv peb tus lej tib yam.

Tsuas yog li ntawd, tsev neeg qhov tseeb hauv lej yog dab tsi?

A tsev neeg tseeb yog ib pab pawg lej qhov tseeb siv tib tus lej. Nyob rau hauv cov ntaub ntawv ntawm ntxiv / rho, koj siv peb tus lej thiab tau txais plaub qhov tseeb. Piv txwv li, koj tuaj yeem tsim ib qho tsev neeg tseeb siv peb tus lej 10, 2, thiab 12: 10 + 2 = 12, 2 + 10 = 12, 12 − 10 = 2, thiab 12 − 2 = 10.

Qhov thib ob, tsev neeg qhov tseeb nyob rau qib 1 lej yog dab tsi? Pab nrog Thawj Qib lej A tsev neeg tseeb yog ua los ntawm peb tus lej. Ib yam li hauv ib qho twg tsev neeg cov tswv cuab, lossis cov lej, muaj feem cuam tshuam thiab ib txwm muaj tsawg kawg yog plaub lej tseeb ua nrog lawv. Piv txwv li, cov tswv cuab ntawm a tsev neeg tseeb 6, 4, thiab 10.

Kuj paub, koj piav qhia cov tsev neeg li cas?

Piav tias a tsev neeg tseeb muaj tag nrho ntawm qhov sib ntxiv thiab rho tawm ua ke uas ob tus lej thiab lawv cov lej tuaj yeem muaj. Piv txwv li, 1 + 2 = 3, 2 + 1 = 3, 3 - 1 = 2, thiab 3 - 2 = 1 ua ib qho tsev neeg tseeb . Sau rau ntawm lub rooj tsavxwm peb tus lej uas tuaj yeem tsim tau a tsev neeg tseeb (e.g. 3, 4, thiab 7).

Dab tsi yog lej qhov tseeb qib 2?

Math Facts : Ntxiv thiab rho tawm Ntxiv thiab rho tawm Math Facts yuav tsum tau mastered los ntawm qhov kawg ntawm lub Qib 2 . Cov menyuam kawm ntawv yuav tshuaj xyuas Math Fact Ntxiv Cov tswv yim xws li "Doubles" (6 + 6 los yog 4 + 4), "Turnarounds" (2 + 7 = 7 + 2), "Zoo Doubles", "Yuav luag Ob npaug" lossis "Doubles Plus 1" (6 + 6 + 12) 6 + 7 = ib qho ntxiv, lossis 13).

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