How can 26 be written as a sum so that one addend is a multiple of 10?

20 + 6 = 26

To write 26 as a sum where one addend is a multiple of 10, we need to find a multiple of 10 that is less than or equal to 26.

Let's start by finding the largest multiple of 10 that is less than or equal to 26, which is 20. Now we have 26 - 20 = 6 left to add.

Therefore, we can write 26 as the sum of 20 and 6, where 20 is a multiple of 10.

Mathematically, it can be expressed as: 26 = 20 + 6.