Subtract using standard algorithm. 73 - 46 = , 92 - 38 = , 88 - 49 = , 97 - 58 = , 84 - 57 = , 69 - 27 = , 75 - 36 = , 61 - 24 = ___

Since $3 < 6$, borrow 1 from the tens place (7 becomes 6). Now units: $13 - 6 = 7$.

$6 - 4 = 2$.

73 - 46 = 27

84 - 57:

Since $4 < 7$, borrow 1 from the tens place (8 becomes 7). Now units: $14 - 7 = 7$.

$7 - 5 = 2$.

84 - 57 = 27

92 - 38:

Since $2 < 8$, borrow 1 from the tens place (9 becomes 8). Now units: $12 - 8 = 4$.

$8 - 3 = 5$.

92 - 38 = 54

69 - 27:

$9 - 7 = 2$.

$6 - 2 = 4$.

69 - 27 = 42

88 - 49:

Since $8 < 9$, borrow 1 from the tens place (8 becomes 7). Now units: $18 - 9 = 9$.

$7 - 4 = 3$.

88 - 49 = 39

75 - 30:

$5 - 0 = 5$.

$7 - 3 = 4$.

75 - 30 = 45

97 - 58:

Since $7 < 8$, borrow 1 from the tens place (9 becomes 8). Now units: $17 - 8 = 9$.

$8 - 5 = 3$.

97 - 58 = 39

61 - 24:

Since $1 < 4$, borrow 1 from the tens place (6 becomes 5). Now units: $11 - 4 = 7$.

$5 - 2 = 3$.

61 - 24 = 37