7.5 milion = 7*106 + 5*105 + 0*104+ 0*103+ 0*102+ 0*101+ 0*100
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Sure thing, honey. 20 million 5 hundred thousand in expanded notation using exponents is 2 x 10^7 + 5 x 10^5. Just break down the numbers and slap those exponents on 'em like it's nobody's business. Easy peasy lemon squeezy.
Sure thing, sweetie. To write 7.5 million in expanded notation using exponents, you would express it as 7.5 x 10^6. That's just a fancy way of saying 7.5 million, where the 6 represents the number of zeros in a million. Hope that clears things up for you, hon.
Expanded Notation of 408 = (4 x 100) + (0 x 10) + (8 x 1).
Expanded notation of 900 = (9 x 100) + (0 x 10) + (0 x 1)
In expanded notation you would write the number 42,166,037 as: 40,000,000 + 2,000,000 + 100,000 + 60,000 + 6,000 + 30 + 7.