Addition
1st Maths | Term 2, Unit 2: Numbers
Recall
Addition upto 9
Number of children playing on the see-saw = 2
Number of children playing slide = 1
Total = 3
Add
5+1 =6
3+3=6
2+7=9
2+3 =5
1+6=7
4+5=9
Learn
Addition with zero
0+3=3
Practice
Draw and add
1+0=1
0+2=2
0+3=3
4+0=4
5+0=5
0+6=6
7+0=7
0+8=8
9+0=9
Game
Teacher may arrange the paper cups on the table as shown in the picture. Give two chances for each student to hit the arranged cups from a particular distance using a ball. Note the number of cups hit by him/her in each chance. Finally ask them to count the total cups hit by them.
Number of cups hit on the first chance = 4
Number of cups hit on the Second chance = 5
Number of cups hit in both the chances together = 9
Travel through
Trees! How many trees?
Mani and Kani are neighbours. They go to school together from their homes. One day on the way to school, Mani started counting the trees on his right side and said the total as 7. Kani also counted the trees on her left side and said the total as 5. When they reached the school, they told their friend Selvi about this.
Selvi told the number of trees that had been counted by Mani and Kani is 12. Kani and Mani were surprised and asked "How did you say that?"
Selvi’s way of counting
Trees counted by Mani is 7 | | | | | | | (Draw 7 lines)
Trees counted by Kani is 5 | | | | | (Now draw 5 lines)
Total number of trees counted by both of them 12
| | | | | | | | | |
| | (Total number of lines grouped in 10)
Learn Addition
Using lines 6 + 9 = ? ; Using beads 12 + 4 = ?
Practice Adding
1+9= 10
8+5= 13
15+0=15
7+7= 14
12+4= 16
19+0=19
14+3=17
11+7=18
6+ 7= 13
11+0=11
3+9= 12
16+4=20
4+13=17
17+1=18
Pleasure time
Find the total of the two numbers given in the table. Colour the peacock with the colours indicated against the total.
Think like a Mathematician
Match the pairs which make the sum 12?
Match the pairs which make the sum 20?
Mental Math
Addition
→ Arasi has 9 pencils, Kamala has 8 pencils. How many pencils do they have altogether?
9+8=17
→ Mary plucked 7 mangoes, Agalya plucked 6 mangoes. They put the mangoes together in a basket. How many mangoes are there in the basket now?
7+6=13
→ Chezhiyan is 12 years old. His sister age is 3 years more than him. How old is Chezhiyan's sister?
12+3=15
→ Samirah has 8 crayons. She buys 4 more crayons. How many crayons does Samirah have totally?
8+4=12