Koj yuav hloov cov lej zauv mus rau cov lej tseem ceeb li cas?

2024 Tus sau: Taylor Roberts | [email protected]. Kawg hloov kho: 2023-12-16 00:29

Txoj kev rau rounding tus lej yog raws li nram no:

1. Rau tus naj npawb ntawm zauv cov chaw tau teev tseg, suav tus lej ntawm tus lej mus rau sab xis ntawm lub zauv thiab underline nws.
2. Tus lej tom ntej rau nws sab xis yog hu ua 'rounder decider'.
3. Yog tias 'rounder txiav txim' yog 5 lossis ntau dua, ces puag ncig tus lej yav dhau los nce los ntawm 1.

Yooj yim li ntawd, ua li cas koj hloov cov decimals nrog sig figs?

Peb puag ncig nce lossis nqis ib yam li peb tau ua rau lwm tus lej zauv qhov chaw. Yog thawj daim duab tom qab zauv point yog 0, 1, 2, 3, lossis 4 peb puag ncig down, yog thawj daim duab tom qab zauv point yog 5, 6, 7, 8, lossis 9 peb puag ncig nce.

Ib sab saum toj no, qhov sib txawv ntawm qhov sib npaug rau cov lej tseem ceeb thiab cov lej lej yog dab tsi? Thaum twg puag ncig rau tus lej tshwj xeeb ntawm cov duab tseem ceeb , txheej txheem zoo ib yam li puag ncig mus rau ib tug xov tooj ntawm decimal qhov chaw . Cov sib txawv yog tias ib tus lej zeros tsis suav nrog cov duab tseem ceeb yog li thawj n cov duab tseem ceeb yog thawj n tus lej tom qab thawj tus lej tsis xoom.

Ib yam li ntawd, nws tau nug, ua li cas koj hloov mus rau cov lej tseem ceeb?

Hloov mus rau ib qho tseem ceeb daim duab:

1. saib thawj tus lej uas tsis yog xoom yog hloov mus rau ib tus lej tseem ceeb.
2. saib tus lej tom qab thawj tus lej uas tsis yog xoom yog hloov mus rau ob tus lej tseem ceeb.
3. kos kab ntsug tom qab tus lej tus lej tus lej uas xav tau.
4. saib tus lej tom ntej.

Muaj pes tsawg tus lej tseem ceeb 10.0 muaj?

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