First of all, we must confirm the baby's math level, whether it will be simple addition and subtraction, and the most basic thing is addition within ten. Children must be taught not to be eager for success, but to pay attention to methods and step by step, so that children can learn well, learn quickly and understand thoroughly enough.

Carry plus digits, add single digits, add ten digits to one to ten digits, add ten digits, and add the obtained number to a ten to get the result. Ma Bao can explain this to her baby. This is a simple math problem.

Extended data:

Additive commutative law

a+b=b+a

For example: 8+1=1+8 = 9100+2 = 2+100 =102.

associative law of addition

a+b+c=a+(b+c)

Example: 7+4+1= 7+(4+1) = (7+4)+1=1210-5+2 = (10)

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