n.加数；（第一）被加物；附加物

The sum of 5 and 3 is 8, where 5 and 3 are addends.
- 5和3的和是8，其中5和3都是加数。
To calculate the total, you simply add the addends together.
要计算总数，你只需将加数相加。
In the equation 7 + 4 = 11, 7 and 4 are the addends.
在等式7 + 4 = 11中，7和4是加数。
The teacher asked students to find the sum of two addends without actually performing the addition.
老师要求学生们找出两个加数的和，但不实际进行加法运算。
If you double one addend and halve the other, the sum may remain the same.
如果你将一个加数翻倍，另一个减半，和可能保持不变，这取决于具体数值。
In arithmetic, an addend is a number that is added to another number.
在算术中，加数是一个被加到另一个数上的数。
To solve the problem, add the two addends first, then subtract from the total.
解决问题时，首先把两个加数相加，然后从总数中减去。
The child learned that combining addends of 10 makes it easier to do mental arithmetic.
这个孩子学会了把加数组合成10会使心算变得更容易。
In the expression 12 + 6 + 4, both 6 and 4 are addends to 12.
- 在表达式12 + 6 + 4中，6和4都是与12相加的加数。
When adding fractions, the denominators must be the same before combining the addends.
当加分数时，必须先使分母相同，然后才能合并加数。