Question

3×10^4 to expanded notation​

Answer 1

`\\ \sf\longmapsto 3(10^4)`

`\\ \sf\longmapsto 3(10)(10)(10)(10)`

`\\ \sf\longmapsto 3(10000)`

`\\ \sf\longmapsto 30000`

Done

Answer 2

3 *10^4=3*10000=30000