I am learning to add and subtract within 10

Many adults do not even imagine how important it is to teach the baby to quickly fold and subtract within the first ten.
It"s so simple for us, and we don’t think about how many mathematical skills will continue to depend on how well your child learn to count within 10.
Let"s see what topics will be closely related to this important skill.
1. Having not mastered the score within ten, the small student will not cope with the next topic - addition in the range of 20. 12 + 4 = 10 + (2 + 4)
2. And in order for 7 + 5, we lay the second term in terms of convenient terms so that 7 supplement to 10. 7 + (3 + 2) = (7 + 3) + 2.
3. Addition of round numbers: 50 + 30. The child will reason like this: "Five dozen plus three dozen ..."
4. We reached the addition and subtraction in the column - again difficulties.
5. We put it poorly and subtract into a column - there will be problems when multiplying and dividing into a column