BA 1.6 Add and Subtract Rational Numbers 18sp 20f PDF

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BA1.6AddandSubtractRationalNumbers18sp20f

June21,2020

BA1.6AddandSubtractRationalNumbers Towritearationalnumberinsimplestformasadecimal Toaddrationalnumbers Tosubtractrationalnumbers

VIDEO sfqM4Q9n0Z8

ARATIONALNUMBERisthequotientoftwointegers(a/b,wherebis notzero).Examples:

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Is6arationalnumber?

Arationalnumber(fraction)isinSIMPLESTFORMwhenthereareno commonfactorsinthenumeratoranddenominator.

Thislongmethodwouldnotbedone usually,butitshowsallthestepsneeded.

Writeinsimplestform byprimefactoringthe numeratorandthe denominator

BA1.6AddandSubtractRationalNumbers18sp20f

June21,2020

Rationalnumbers(fractions)canbewrittenasdecimals. VIDEO

is3dividedby10.Youcandolongdivisiontoget0.3. Whathappenstothedecimalpoint?

isaterminatingdecimal

isarepeatingdecimal:0.33333etc,or

Writeinsimplestform,andindecimalform:

42

35

70

10

BA1.6AddandSubtractRationalNumbers18sp20f

June21,2020

TO ADDRATIONALNUMBERS,THERATIONAL NUMBERSMUSTHAVETHESAMEDENOMINATOR.

VIDEO oVEkndwXKI

ToADDFRACTIONSWITHDIFFERENTDENOMINATORS, thefractionsmustbeconvertedtofractionswithacommon denominator FindtheLCMofthedenominators(theLCD) Primefactor/listfactors/tohighestpower Multiplythenumeratoranddenominatorbywhatis missinginthedenominator.

Primefactor10

Primefactor12

LCM

BA1.6AddandSubtractRationalNumbers18sp20f

June21,2020

Add

TOSUBTRACTTWOFRACTIONS,denominatorsmustalsobe thesame.

VIDEO pk85d26_UpU...