Datrys (d)9*10^5+2*10^2+3*10^1

$$( d ) 9 \times 10 ^ { 5 } + 2 \times 10 ^ { 2 } + 3 \times 10 ^ { 1 }$$

Enrhifo

$$900000d+230$$

Camau Ateb

Cyfrifo 10 i bŵer 5 a chael 100000.

$$d\times 9\times 100000+2\times 10^{2}+3\times 10^{1}$$

Lluosi 9 a 100000 i gael 900000.

$$d\times 900000+2\times 10^{2}+3\times 10^{1}$$

Cyfrifo 10 i bŵer 2 a chael 100.

$$d\times 900000+2\times 100+3\times 10^{1}$$

Lluosi 2 a 100 i gael 200.

$$d\times 900000+200+3\times 10^{1}$$

Cyfrifo 10 i bŵer 1 a chael 10.

$$d\times 900000+200+3\times 10$$

Lluosi 3 a 10 i gael 30.

$$d\times 900000+200+30$$

Adio 200 a 30 i gael 230.

$$d\times 900000+230$$

Ffactor

$$10\left(90000d+23\right)$$

Camau Ateb

Ffactora allan 10.

$$10\left(90000d+23\right)$$

Ystyriwch 90000d+20+3. Lluosi a chyfuno termau sydd yr un fath.

$$90000d+23$$

Ailysgrifennwch y mynegiad cyfan wedi'i ffactorio.

$$10\left(90000d+23\right)$$