For example: 14-8=6

You can do this: take 14 as 10 and 4, subtract 8 from it (10-8 = 2), and then combine 2 and 4 (4+2=6), and the business trip is 6.

Decimal method: a calculation method, that is, when the unit is not reduced enough, subtract the subtraction with 10, and add the remainder with the number in the unit, that is, decimal method.

Children's subtraction formula breaks ten methods;

Minus nine and add one? Minus eight and add two? Negative seven plus three.

Negative six and negative four? Minus five and add five? Negative four plus six.

Minus three and seven? Minus two and add eight? Negative plus nine.