8.5 is the same as 8.50, right? So just take the digit in the hundredth place of both decimals and subtract. You'd be doing 0-4 so you can go ahead and borrow a number to make 10-4, which equals 6. So without subtracting 8.5 and 4.64, you can determine that 6 will be in the hundredth place. Hope this helps!
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The answer is is the picture..
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C - b = 190x - 10x
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Mark brainliest
You take the numbers that are above 5 and put them up one to the next tenth then you do that the same for thousands. your anwser would be 900,000