321,000 = (3 x 1000000) + (2 x 100000) + (1 x 10000) + (0 x 1000) + (0 x 100) + (0 x 10) + (0 x 1)
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(3*100,000)+(2*10,000)+(1*1000)
321,000 = (3 x 100000) + (2 x 10000) + (1 x 1000) + (0 x 100) + (0 x 10) + (0 x 1)
You write in the numbers in words when you write in expanded.
1.7 = 1*100 + 7*10-1
427,013 in expanded form math ELEMENTARY