Question

A) Work out
Give
(5 x 10^3) * (9 x 10^7)
your answer in standard form.

Answer 1

`\huge\text{Hey there!}`

`\mathsf{(5*10^3) * (9*10^7)}`

`\mathsf{= (5* 10* 10* 10)* (9* 10*10*10* 10*10*10* 10)}`

`\mathsf{= (5* 100* 10) * (9* 100* 100* 100 * 10)}`
`\mathsf{= (5* 1,000) * {(9* 10,000* 1,000)}}`

`\mathsf{= (5,000)*(90,000*1,000)}`

`\mathsf{= (5,000)* (90,000,000)}}`

`\mathsf{= 5,000* 90,000,000}}`

`\mathsf{= 450,000,000,000}`

`\mathsf{= 4.5*10^(11)}`

`\huge\text{Therefore, your answer should be: \boxed{\mathsf{4.5* 10^(11)}}}\huge\checkmark`

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