Subtraction
36-21=15
Subtraction finds the difference between two numbers. Starting from 36 and taking away 21 leaves 15. Borrow from the tens place when the top ones digit is smaller than the bottom one.
Subtraction
Subtraction finds the difference between two numbers. Starting from 36 and taking away 21 leaves 15. Borrow from the tens place when the top ones digit is smaller than the bottom one.