>>100262707Let's compare the two

Long Subtraction

32 - 12 = ?

2 - 2 = 0

30 - 10 = 20

20 + 0 = 20

Answer: 20

Old Subtraction New Subtraction

32 - 13 = ? 32 - 13 = ?

2 - 3 = -1 13 + 2 = 15

10 - 1 = 9 15 + 5 = 20

30 - 10 - 10 = 10 20 + 10 = 30

10 + 9 = 19 30 + 2 = 32

Answer: 19 2 + 5 + 10 +2 = 19

Answer: 19

Old Subtraction New Subtraction

32 - 123 = ? 32 - 123 = ?

2 - 3 = -1 32 + 3 = 35

10 - 1 = 9 35 + 5 = 40

30 - 20 - 10 = 0 40 + 10 = 50

0 + 9 = 9 50 + 50 = 100

000 - 100 = - 100 100 + 23 = 123

-100 + 9 = -91 3+5+10+50+23=91

Answer. - 91. 0 - 91 = -91

Answer = -91

Old Subtraction New Subtraction

32 - 143 = ? 32 - 143 = ?

2 - 3 = -1 32 + 3 = 35

10 - 1 = 9 35 + 5 = 40

30 - 40 - 10 = - 20 40 + 10 = 50

-20 + 9 = -11 50 + 50 = 100

000 - 100 = - 100 100 + 43 = 143

-100 + -11 = -111 3 + 5 + 10 + 50 + 43 = 111

Answer: -111. 0 - 111 = -111

Answer: -111

Huh. Not gonna lie, the new way was easier.