# Write decimals

Write in the decimal system the short and advanced form of these numbers:
a) four thousand seventy-nine
b) five hundred and one thousand six hundred and ten
c) nine million twenty-six

Result

a =  4079
b =  501610
c =  9000026

#### Solution:

$a = 4 \cdot \ 1000 + 7 \cdot \ 10 + 9 \cdot \ 1 = 4079$
$b = 5 \cdot \ 100000 + 1 \cdot \ 1000 + 6 \cdot \ 100 + 1 \cdot \ 10 = 501610$
$c = 9 \cdot \ 1000000 + 2 \cdot \ 10 + 6 \cdot \ 1 = 9000026 = 9.000026\cdot 10^{ 6 }$

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