16 tens=160, 160+15 ones=175. The answer is 175.
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Subtracting 15 ones from 15 tens involves converting the tens into ones to perform the subtraction. Since each ten is equivalent to 10 ones, subtracting 15 ones from 15 tens means subtracting 150 from 15, resulting in -135. This is because after converting 15 tens to ones, you have a total of 150 ones, and subtracting 15 ones leaves you with 135 ones.
15 638 can be made with 1 ten, 5 ones, 6 hundreds, 3 tens, and 8 ones; 1 ten, 8 ones, 6 hundreds, 3 tens, and 5 ones; or 6 ones, 5 hundreds, 3 tens, 8 ones, and 1 ten.
150 - 15 = 135
1744
1