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3064
The 1 tens and 3 units is less than 1 tens and 6 units.
Yes, but, it's not can be equal, they are equal.
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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.