Cov txheej txheem:

Puas yog xoom suav ua tus lej tseem ceeb?
Puas yog xoom suav ua tus lej tseem ceeb?

Video: Puas yog xoom suav ua tus lej tseem ceeb?

Video: Puas yog xoom suav ua tus lej tseem ceeb?
Video: Xov Xwm, Poj Niam Noj Tshuaj Tuag, Yog Tim Li Cas 2024, Kaum ib hlis
Anonim

Ua thawj xus ( zeros ua ntej tsis xoom tooj) tsis yog tseem ceeb . Taug qab zeros nyob rau hauv ib tug xov tooj uas muaj ib tug decimal point yog tseem ceeb . Piv txwv, 12.2300 muaj rau cov duab tseem ceeb : 1, 2, 2, 3, 0, thiab 0. Tus lej 0.000122300 tseem tsuas muaj rau cov duab tseem ceeb (cov zeros ua ntej 1 tsis yog tseem ceeb ).

Ua li no, puas yog xoom tom kawg ntawm tus lej tseem ceeb?

Txhua yam tsis yog xoom cov lej yog tseem ceeb . Taug qab zeros (yog feem ntau zeros ) yog tseem ceeb thaum muaj decimal point nyob rau hauv lub tus lej . Vim li no nws yog ib qho tseem ceeb uas yuav tau txiav txim siab txog thaum siv tus lej lej zauv thiab kom ua raws zeros los qhia qhov tseeb tus lej ntawm tseem ceeb cov duab.

Tsis tas li, ua zeros suav ua lej zauv? Qhov txawv yog tias txhua tus coj zeros ua tsis yog suav raws li cov nuj nqis tseem ceeb, yog li thawj n cov nuj nqis tseem ceeb yog thawj n tus lej tom qab thawj zaug uas tsis yog- xoom tus lej. Piv txwv li, 0.010428 yog 0.0104 txog 4 decimal qhov chaw , tab sis yog 0.01043 txog 4 tus lej tseem ceeb.

Kuj paub yog, koj suav cov lej tseem ceeb li cas?

Cov Cai rau Cov Lej Nrog Lub Ntsiab Lus Taw Qhia

  1. START suav rau sig. figs. Nyob rau ntawm FIRST tus lej uas tsis yog xoom.
  2. STOP suav rau sig. figs.
  3. Tus lej tsis xoom yog ib txwm tseem ceeb.
  4. Ib qho xoom tom qab thawj tus lej uas tsis yog xoom tseem yog qhov tseem ceeb. Cov xoom ua ntej thawj tus lej tsis yog xoom tsis tseem ceeb.??

Dab tsi yog 5 Txoj Cai rau cov nuj nqis tseem ceeb?

Cov Duab Tseem Ceeb

  • Cov lus piav qhia qeb:
  • RULES RAU QHOV TSEEB TSEV KAWM NTAWV.
  • Txhua tus lej tsis xoom yog qhov tseem ceeb.
  • Zeros ntawm ob tus lej uas tsis yog xoom yog qhov tseem ceeb.
  • Ua zeros tsis yog qhov tseem ceeb.
  • Taug qab zeros mus rau sab xis ntawm cov lej yog qhov tseem ceeb.
  • Trailing zeros nyob rau hauv ib tug tag nrho tus lej nrog cov zauv qhia yog qhov tseem ceeb.

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