a)

**Addition** means:

- The Process of finding the
**sum of two or more numbers.**
- To calculate the
**total** of two or more numbers.
- For example: 3
**+** 4 = 7
- The
**total** is called the **sum** of the numbers added.

b) Other words of '

**Addition**':

- Sum
- Add
- Altogether
- Total
- Plus
- More

c) Adding Two Numbers

**Without Regrouping**.

i) Add a 2-digit number and a 1-digit number.

ii) Add two 2-digit numbers.

iii) Add a 3-digit number and a 1-digit number.

iv) Add a 3-digit number and a 2-digit number.

v) Add two 3-digit numbers.

d) Adding Two Numbers

**With Regrouping.**
i) Add a 2-digit number and a 1-digit number.

ii) Add two 2-digit numbers.

iii) Add three 1-digit numbers.

iv) Unknown Numbers.

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