Answer: Counters are an excellent method that children can use in their attempts to master math skills including counting, adding, subtracting, making patterns and comparing numbers.
The given sum = 8+5
To make 10 for adding them, first check which number is nearest to the 10.
We can see the number is 8 which is nearest to 10 in the given sum.
Now, to make a 10 here, we need to add 2 to 8 , and we subtract 2 from 5 such that the sum would become
![8+5\\=8+2+(5-2)\\=10+3\\=13](https://tex.z-dn.net/?f=8%2B5%5C%5C%3D8%2B2%2B%285-2%29%5C%5C%3D10%2B3%5C%5C%3D13)