Page 198 - New Medley 2 Semester 1

2 Addition Competencies

C-8.6, C-8.12, C-8.13, C-8.14

In Class I, you learnt how to add numbers up to 2-digits.

Now, we will learn how to add numbers up to 3-digits.

Before we go ahead, let us recall what we had learnt in Class I.

Let us Recall

• Initiative and self-direction
21st CENTURY SKILLS
A. Addition (By regrouping)

34 + 23 = tens + ones + tens + ones

= + tens + + ones

= tens + ones =
B. Add:

1. T O 2. T O 3. T O 4. T O

4 7 3 6 3 6 3 3

+ 3 2 + 6 2 + 2 9 + 5 7

C. A bag had 23 pencils. 18 more were put in it. How many pencils
are there in the bag now?

D. Fill in the boxes.

1. 45 + 32 = + 45 2. 39 + 53 = + 39

3. 75 + 0 = 4. 25 + = 25

E. Estimating the sum by rounding to nearest ten.

34 + 48 Estimate: + =
112