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Answer for number 1

Scientific: 3×

Standard: 300

Steps:

Reduce the fraction with 3.

3× /

Simply the expression.

3×

Evalulate the power & Multiply the numbers

3×100 = 300

Answer for number 2

Scientific: 4.5×

Standard: 450000

Steps: Separate the fraction into 2 fraction.

×  

Divide the numbers and Divide the terms with the same bases by subtracting their exponents.

4.5×

Subtract the numbers and you get

4.5×

Answer for number 3

Scientific: 1.5×

Standard: 0.0015

Steps: Separate the fraction into 2 fractions

×

Divide the numbers. Divide the terms with the same base by subtracting their exponents.

1.5×

Calculate the sum and you get 1.5×

Hope this helps ʕ•ᴥ•ʔ