Datrys 100=3*30*10^-32^20/(38)^2

$$100 = \frac { 3 \times 30 \times 10 ^ { - 3 } 2 ^ { 20 } } { ( 38 ) ^ { 2 } }$$

Gwireddu

Camau Ateb

Lluosi 3 a 30 i gael 90.

$$100=\frac{90\times 10^{-3}\times 2^{20}}{38^{2}}$$

Cyfrifo 10 i bŵer -3 a chael \frac{1}{1000}.

$$100=\frac{90\times \frac{1}{1000}\times 2^{20}}{38^{2}}$$

Lluosi 90 a \frac{1}{1000} i gael \frac{9}{100}.

$$100=\frac{\frac{9}{100}\times 2^{20}}{38^{2}}$$

Cyfrifo 2 i bŵer 20 a chael 1048576.

$$100=\frac{\frac{9}{100}\times 1048576}{38^{2}}$$

Lluosi \frac{9}{100} a 1048576 i gael \frac{2359296}{25}.

$$100=\frac{\frac{2359296}{25}}{38^{2}}$$

Cyfrifo 38 i bŵer 2 a chael 1444.

$$100=\frac{\frac{2359296}{25}}{1444}$$

Mynegwch \frac{\frac{2359296}{25}}{1444} fel ffracsiwn unigol.

$$100=\frac{2359296}{25\times 1444}$$

Lluosi 25 a 1444 i gael 36100.

$$100=\frac{2359296}{36100}$$

Lleihau'r ffracsiwn \frac{2359296}{36100} i'r graddau lleiaf posib drwy dynnu a chanslo allan 4.

$$100=\frac{589824}{9025}$$

Troswch y rhif degol 100 i’r ffracsiwn \frac{902500}{9025}.

$$\frac{902500}{9025}=\frac{589824}{9025}$$

Cymharu \frac{902500}{9025} gyda \frac{589824}{9025}.

$$\text{false}$$