Question

By first making the powers of 10 the same,

work out (3 x 10 6) + (5 × 10 7)
Give your answer in standard index form.

Answer 1

`\huge\text{Hey there!}`

`\mathsf{(3*10^6) + (5*10^7)}\\\mathsf{= (3*10*10*10* 10*10*10) + (5* 10*10*10 * 10*10*10 * 10)}\\\mathsf{= (3* 100*100*100) + (5*100*100*100*10)}\\\mathsf{= (3*10,000*100) + (5*10,000*1,000)}\\\mathsf{= (3*1,000,000) + (5*10,000,000)}\\\mathsf{= (3,000,00) + (50,000,000)}\\\mathsf{= 3,000,000 + 50,000,000}\\\mathsf{= 53,000,000}\\\mathsf{= 5.3*10^7}`

`\huge\text{Therefore your answer should be:}\\\huge\boxed{\mathsf{5.3*10^7}}\huge\checkmark`

~
`\frak{Amphitrite1040:)}`