Gwireddu
ffug
Cwis
Arithmetic
\frac{ 10 \times { 10 }^{ -14 } }{ 50 \times { 10 }^{ -2 } } =20 \times { 10 }^{ -11 }
Rhannu
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\frac{10^{-13}}{50\times 10^{-2}}=20\times 10^{-11}
Er mwyn lluosi pwerau sy’n rhannu’r un sail, adiwch eu esbonyddion. Adiwch 1 a -14 i gael -13.
\frac{1}{50\times 10^{11}}=20\times 10^{-11}
Er mwyn rhannu pwerau sy’n rhannu’r un sail, tynnwch esbonydd yr enwadur o esbonydd y rhifiadur.
\frac{1}{50\times 100000000000}=20\times 10^{-11}
Cyfrifo 10 i bŵer 11 a chael 100000000000.
\frac{1}{5000000000000}=20\times 10^{-11}
Lluosi 50 a 100000000000 i gael 5000000000000.
\frac{1}{5000000000000}=20\times \frac{1}{100000000000}
Cyfrifo 10 i bŵer -11 a chael \frac{1}{100000000000}.
\frac{1}{5000000000000}=\frac{1}{5000000000}
Lluosi 20 a \frac{1}{100000000000} i gael \frac{1}{5000000000}.
\frac{1}{5000000000000}=\frac{1000}{5000000000000}
Lluosrif lleiaf cyffredin 5000000000000 a 5000000000 yw 5000000000000. Troswch \frac{1}{5000000000000} a \frac{1}{5000000000} yn ffracsiynau gyda’r enwadur 5000000000000.
\text{false}
Cymharu \frac{1}{5000000000000} gyda \frac{1000}{5000000000000}.
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