We add to put things together.
When we count one forward from a number we get one more than that number. One more than number 3 is number 4. Counting forward means addition. The answer we get after adding numbers is called the sum.
Addition: Counting Together
Look at the picture. How many children are standing near the board? Oh! Yes 3 children are standing near the board. |
Thus, we can say 3 and 2 together make 5.
We write 3 + 2 = 5.
We read it as 'Three plus Two is equal to Five'.
+ stands for plus and = stands for equal to.
Plus means counting together.
We can add within 10, using different techniques.
We may add by using our own fingers.
Count together and write the sum.
Drawing Pictures for Picture Addition:
(i) Amy has 2 cookies. She got 1 more cookie. How many cookies does she have altogether?
Similarly,
Picture Addition Using Small Objects:
Count the number of toys in Frame A and Frame B together and write the sum.
Number of toys in Frame A = 6
Number of toys in Frame B = 3
Counting together, we get 6 + 3 = 9
Picture Addition: Counting Together:
Count them together to find the answer.
1. Find one more than the given number.
One more than 4 is _____
One more than 5 is _____
One more than 6 is _____
One more than 7 is _____
2. Count and write. How many in all? One has been done for you.
3 and 2 More Make 5
_____ and _____ More Make _____
_____ and _____ More Make _____
3. Add and write the number in the blanks. One has been done for you.
6 |
and |
2 |
makes |
8 |
7 |
and |
1 |
makes |
_____ |
5 |
and |
3 |
makes |
_____ |
2 |
and |
4 |
makes |
_____ |
4 |
and |
5 |
makes |
_____ |
3 |
and |
6 |
makes |
_____ |
1 |
and |
5 |
makes |
_____ |
5 |
and |
2 |
makes |
_____ |
Picture Addition Using Addition Symbol:
Sign for Addition:
We use + sign to say plus. We use = sign in place of equal to
5 |
+ |
3 |
= |
8 |
When we count the objects in two collections together, we say we are adding them.
We use the sign + to show that we are adding.
+ is the sign for adding. We call it plus.
You know that = means is equal to.
We see that 3 and 2 are 5.
We say 3 plus 2 is equal to 5.
We write 3 + 2 = 5
4. Complete these. Use + and =.
(i)
(ii)
How much is 4 and 1?
5. Complete the following.
6. Draw and complete the addition.
7. Count, write and find the answer. One has been done for you.
(i)
(ii)
(iii)
(iv)
(v)
(vi)
(vii)
8. Add and write in the blanks.
3 |
+ |
4 |
= |
7 |
1 |
+ |
7 |
= |
_____ |
4 |
+ |
4 |
= |
_____ |
5 |
+ |
3 |
= |
_____ |
3 |
+ |
4 |
= |
_____ |
1 |
+ |
6 |
= |
_____ |
7 |
+ |
2 |
= |
_____ |
5 |
+ |
1 |
= |
_____ |
6 |
+ |
2 |
= |
_____ |
4 |
+ |
4 |
= |
_____ |
Addition Facts:
I. Two numbers can be added in any order.
5 + 2 is same as 2 + 5
9. Write the addition facts.
(i) _____ + 4 = 7 + 2
(ii) 1 + 6 = 6 + _____
(iii) _____ + 4 = 2 + 4
(iv) 2 + 3 = 3 + _____
(v) _____ + 1 = 1 + 6
(vi) 5 + 4 = 4 + _____
(vii) _____ + 2 = 2 + 5
(viii) 3 + 6 = 6 + _____
II. Adding Three Numbers:
To add three numbers we first find the sum of two numbers and add to the third number.
Find the sum.
(i)
(ii)
(iii)
(iv)
III. Adding Zero
(a) David has 7 balloons, John does not have balloon. How many balloons both have?
(b) Marie has 5 pencils, she does not buy any more pencil from the shop.
How many pencils does she have?
When 0 is added to a number, the number remains the same.
10. Add and write answer in the box. One has been done for you.
5 + 0 = 5 |
0 + 3 = _____ |
8 + 0 = _____ |
3 + 0 = _____ |
7 + 0 = _____ |
1 + 0 = _____ |
0 + 9 = _____ |
0 + 2 = _____ |
0 + 6 = _____ |
0 + 3 = _____ |
0 + 0 = _____ |
6 + 0 = _____ |
11. Word Problems on Picture Addition. One has been done for you.
(i) Joe had 4 doughnuts. His father gave him 3 more doughnuts. How many doughnuts Joe has in all? |
4 + 3 = 7 |
(ii) Pat went to the garden. She saw 2 flowers. She saw 3 more flowers in a row. How many flowers she saw in all? |
... + ... = ... |
(iv) Aaron has 3 pencils. He gets 2 from his brother. How many pencils does he have now? |
... + ... = ... |
Answer:
11. (ii) 5
(iii) 9
(iv) 5
(v) 7
First Grade Math Activities
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