A number that is added to another number.
The word summand is used in math to talk about adding numbers together.
Examples:
In 2 + 3, 2 and 3 are the summands.
The summands in 5 + 7 are 5 and 7.
She added the summands together to get the total.
The summands are like friends that join together for a party.
The summands in 100 + 200 are 100 and 200, which makes a big number!
The teacher said the summands are the numbers that get added.