1. Mathematics
Prathomsuksa 2

2. Addition
and
Subtraction

3. Adding and Subtracting

4. Vocabulary
minus

5. Vocabulary
plus

6. Vocabulary
change

7. Structure
• How many?
• How much?

8. How many?
• Followed by plural noun
For examples
• How many pens do you have?
• How many pets do you have?

9. How much?
• Followed by an uncountable noun
For examples
• How much sugar do you have?
• How much money do you have?

16. Question
1. How much money did the man give to Carlos?
: Two quarter or 50 cents.
2. How many dimes make 50 cents?
: 5 dimes

17. How many fruits are
there in all?

18. There are 6 apples and 5 oranges.
How many fruits are there in all?
11

19. How many fruits are
there in all?
14

20. Your turn

21. 11

22. 15

23. 15

24. 16

25. How much is it?

26. 40 10
50
40+10 = ?

27. 30

28. Role play
• Situation: You are in the toy shop
• Direction
• Work in pair
• One is an shopkeeper and another is a
costumer.
• A costumer has 70
• A costumer has to choose 2 things
• A shopkeeper has to change money

29. Example
Yes, please. I Welcome to SS’ toy.
would like to buy
toys.
May I help you?

30. Example
A tennis is 12 .
How much are A Barbie is 25 .
they? 12+25 = 37

31. Example
I give you 50 – 37 = 13
Thank you Here is 13 in
change.

32. 20
12 15
28 25 35
30 25
24