write each of the following in decimal form:

(a) 5x100+2x10+7+4x0.1+8x0.001
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(b)...
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500 + 20 + 7 + 0.4 + 0.008 = ?

(a) To convert the given expression into decimal form, we need to perform the calculations:

5x100 = 500
2x10 = 20
7 = 7
4x0.1 = 0.4
8x0.001 = 0.008

Now, let's add all the results together:

500 + 20 + 7 + 0.4 + 0.008 = 527.408

So, the expression (a) in decimal form is 527.408.

(b) Unfortunately, you haven't provided any expression for part (b). If you can provide the expression, I would be happy to help you convert it into decimal form.