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3 Addition up to 20

Learning Objectives
Learning Objectives
After studying this chapter, students will be able to...

( know and explain what addition means

( add numbers by counting forward and using a number strip
( carry out vertical addition ( add three numbers up to 20
( explore properties of addition ( solve real-life problems involving addition

get ready! Holistic Skills
Social Emotional Learning
Sneha is celebrating her birthday with her friends and family members.

Mom, there are 6 boys Sometimes when we need to
and 4 girls at the party. know how many things there are
How many pieces of cake in all or in total, we do addition
do I need to cut for them? by putting them together. This is
done by counting on.

1 2 3 4 5 6 7 8 9 10
and

6 boys plus 4 girls = 10 children
for combining the two numbers, we do addition and use the symbol “+”. 6 + 4 = 10

Here, 10 is the sum of 6 and 4. It is read as ‘6 plus 4 is equal to (=) 10’.

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