Funny account. Part 3. Fold and subtract. 7-8 years. 92 tasks that will teach to count. Parkhomenko S.

with the notebook “Funny account” for 7–8 years, the child will learn to confidently add, subtract and get acquainted with the principles of solving equations. This will not be afraid of complex topics and keep up with the school curriculum.

For example, the composition of the number becomes clearer when you type 9 rubles in coins to buy lemonade.

and solving examples more interesting when you share Cheese between mice.