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3 Addition up to 20

Learning Objectives

Scan to learn
After studying this chapter, students will be able to...
( understand what addition means
( add numbers by counting forward and using number strip

( know vertical addition ( add three numbers up to 20
( explore properties of addition ( solving real life situations in addition

get ready!

Sneha is celebrating her birthday with her friends and family members.

Mom, there are 6 boys Sometimes when we need to know
and 4 girls in the party. how many things in all or how
How many pieces of cake many in total, we do addition by
do I have to cut for them? putting them together. It 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 use the symbol “+” for addition. 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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