Cov txheej txheem:

Koj ua li cas yooj yim thiab faib cov feem?
Koj ua li cas yooj yim thiab faib cov feem?

Video: Koj ua li cas yooj yim thiab faib cov feem?

Video: Koj ua li cas yooj yim thiab faib cov feem?
Video: Qhia rub cov duab raug lwv lawm yooj yooj yim 4 ນາທີ koj tau ຄວາມຮູ້ ntau.EP.1 2024, Kaum ib hlis
Anonim

Nov yog Txoj Cai rau Division

  1. Hloov cov "÷" ( kev faib kos npe) mus rau "x" (cov cim kos npe) thiab hloov tus lej mus rau sab xis ntawm lub cim.
  2. Ua ntau tus lej.
  3. Ua ntau tus denominators.
  4. Rov sau koj cov lus teb hauv nws daim ntawv yooj yim lossis txo qis, yog tias xav tau.

Xav txog qhov no, koj faib cov feem ntau li cas?

Rau faib feem coj tus reciprocal (invert lub feem ) ntawm tus divisor thiab muab cov nyiaj faib. Qhov no yog cov txheej txheem ceev tshaj plaws rau faib feem . Sab saum toj thiab hauv qab tau muab faib los ntawm tib tus lej thiab, txij li tus lej ntawd yog qhov sib txuam ntawm qhov hauv qab, hauv qab ua ib qho.

Qhov thib ob, dab tsi yog 0.75 raws li ib feem? Piv txwv tus nqi

Feem pua Decimal Ib feem
75% 0.75 3/4
80% 0.8 4/5
90% 0.9 9/10
99% 0.99 99/100

Kuj nug, dab tsi yog 0.25 raws li ib feem?

Tus lej 0.25 sawv cev rau feem 25/100 ib. Decimal ib feem ib txwm muaj tus denominator raws li lub zog ntawm 10. Peb paub tias 5/10 yog sib npaug rau 1/2 txij thaum 1/2 zaug 5/5 yog 5/10. Yog li ntawd, tus lej 0.5 yog sib npaug rau 1/2 lossis 2/4, thiab lwm yam.

Dab tsi yog 1.5 raws li ib feem?

1.5 hauv feem daim ntawv yog 3/2.

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