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The number is 79. 7 x 10 = 70 + 9 = 79.
To find the number represented by 7 tens and 9 ones, you would multiply 7 by 10 (since there are 10 ones in a ten) to get 70, and then add the 9 ones to get the final number. Therefore, 7 tens and 9 ones is equal to 79.
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HOW MUCH IS 10 TENS