80 - 8 in the tens place, 20 - 2 in the tens place, 64 - 6 tens and 4 ones, 9 - 9 in the ones place , 47 - four tens and seven ones, 60 - 6 in the tens place, 27 - two tens + seven ones, 46 - four tens + six ones, 92 - 9 tens and 2 ones, 30+5=35 - 3 tens + 5 ones, 31 - 30 + 1, 76 - 70 + 6, 88 - 8 tens and 8 ones, 73 - 70 + 3, 50+5=55 - 5 tens + 5 ones, 40+8=48 - 4 tens + 8 ones, 20+9=29 - 2 tens + 9 ones, 60+5=65 - 6 tens + 5 ones, 30+2=32 - 3 tens + 2 ones, 2 - 2 in the ones place,

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