This document contains a grade 1 math lesson plan covering various number sense topics: - Counting sets of ones and tens and regrouping them - Writing numbers as tens and ones - Adding and subtracting tens and ones - Word problems involving addition and subtraction of amounts less than 100 The lesson includes guided practice problems for students to work through with explanations for the answers. It also has a challenge section at the end with slightly more difficult multi-step word problems for additional practice.

2. GRADE 1
SESSION 2

3. Part I NUMBER SENSE

4. A. Count the ones. Regroup to make groups
of tens and write the answers on the blanks.
1. 3. 5.

5. A. Count the ones. Regroup to make groups
of tens and write the answers on the blanks.
1. 3. 5.
24= 2 tens and 4 ones 40= 4 tens and 0 ones 21= 2 tens and 1 ones

6. A. Count how many are in each set.
2. 4. 6.

7. A. Count how many are in each set.
2. 4. 6.
25= 2 tens and 5 ones
32= 3 tens and 2 ones
36= 3 tens and 6 ones

8. B. Count the tens. Regroup to make groups of
hundreds and write the answers on the blanks.
1.
10 tens= 1 hundreds and 0 tens

9. B. Count the tens. Regroup to make groups of
hundreds and write the answers on the blanks.
2.
14 tens= 1 hundreds and 4 tens

10. B. Count the tens. Regroup to make groups of
hundreds and write the answers on the blanks.
3.
18 tens= 1 hundreds and 8 tens

11. C. Write the number of tens and ones.
2 5
3 2
7 6
2 8
3 7

12. C. Write the number of tens and ones.
6
8
7
2
9
6
4
5
9
8

13. C. Write the number of tens and ones.
5
3
1
1
5
6
2
9
0
3

14. D. Rename the following into tens and ones.
3
5
1
9
4
10
20
80
70

15. E. Rename the following numbers
35
68
41
99
82
54

16. E. Rename the following numbers
23
47
76

17. F. Count the number in each set and take away the
encircled objects
1.
6

18. F. Count the number in each set and take away the
encircled objects
2.
17 take away 8 is 9

19. F. Count the number in each set and take away the
encircled objects
13 take away 4 is 9
17 take away 6 is 11

20. F. Count the number in each set and take away the
encircled objects
15 take away 6 is 9
33 take away 15 is 18
1. 6
2. 17, 8, 9
3. 13, 4, 9
4. 17, 6, 11
5. 1, 6, 9
6. 33, 15, 18

21. G. Count each set and give the difference.
1.
9 - 8 = 1

22. G. Count each set and give the difference.
2.
12 - 6 = 6

23. G. Count each set and give the difference.
3.
16 - 8 = 8

25. H. Give the answer to the following.
1.If 5 is taken away from 12, the answer is ___.
2.If 10 is taken away from 19, the answer is___.
3. If 13 is taken away from 25, the answer is___.
4. Take away 8 from 18, the answer is ___.
5. Take away 12 from 32, the answer is ____.
6. Take away 9 from 17, the answer is _____.
7
9
12
10
20
8

26. I. Write the following in expanded form.
Regroup and subtract.
25 = 20 + 5 = 10 + 15
-17 = -10 + 7 = -10 + 7
0 + 8
The answer is 8.
1.

27. 2. 81
- 43
3. 56
-29
4. 90
- 26
5. 61
- 32
6. 78
- 39

28. I. Write the following in expanded form.
Regroup and subtract.
81 = 80 + 1 = 70 + 11
- 43 = -40 + 3 = -40 + 3
30 + 8
The answer is 38.
2.

29. I. Write the following in expanded form.
Regroup and subtract.
56 = =
- 29 = = _______
The answer is 27.
3. 56 = 50 + 6 = 40 + 16
- 29 = -20 + 9 = -20 + 9
20 + 7

30. I. Write the following in expanded form.
Regroup and subtract.
90
- 26
64 29 39
4. 5. 6.
61
- 32
78
- 39

31. J. Give/Write the difference of the following.

32. J. Give/Write the difference of the following.

34. II. Problem Solving

35. 1. Abigail has 12 Lanzones. She ate 5 of it. How
many were left? _____
2. How many ones are there in 9 tens? _____
3. 35 is the same as 2 tens and ____ ones.
4.How many tens are there in 91 ones? _____
5. 32 ones and 3 tens is equal to ____.

36. 1. Abigail has 12 Lanzones. She ate 5 of it. How
many were left? _____
2. How many ones are there in 9 tens? _____
3. 35 is the same as 2 tens and ____ ones.
12 – 5 = 7
7 lanzones were left.
9 tens = 90 ones
35 = 2 tens + 15 ones
90 ones
15

37. 4.How many tens are there in 91 ones? _____
5. 32 ones and 3 tens is equal to ____.
3 tens + 32 ones= 30 + 32 = 62
91 = 9 tens + 1 ones
9 tens
62

38. 6. Aldrin bought pencil and eraser for ₱ 33. How much change will he get if he
pays ₱100? _____
7. Catherine has 48 vegetables seedlings. She was able to plant 19 seedlings in
her backyard last week. How many more seedlings does she still need to plant
this week? _____
8. Joshua has ₱ 93. He bought a snack worth ₱45. How much money does he
have left? _____
9. Mary Jane baked 35 cookies. Her friend baked 24 cookies. What is the
difference between their cookies? _____
10. Mother bought 1 dozen of eggs. She used some in making bread. She has 7
pieces let. How many eggs were used I making bread? _____

39. 6. Aldrin bought pencil and eraser for ₱ 33. How much change will he get if he
pays ₱100?
7. Catherine has 48 vegetables seedlings. She was able to plant 19 seedlings in her
backyard last week. How many more seedlings does she still need to plant this week?
100 = 100 + 0 = 90 + 10
- 33 = -30 + 3 = - 30 + 3
60 + 7 = 67
Her change
will be 67 pesos
48 = 40 + 8 = 30 + 18
- 19 = -10 + 9 = - 10 + 9
20 + 9 = 29
29 more
seedlings

40. 6. Aldrin bought pencil and eraser for ₱ 33. How much change will
he get if he pays ₱100? _____
7. Catherine has 48 vegetables seedlings. She was able to plant 19
seedlings in her backyard last week. How many more seedlings
does she still need to plant this week? _____
8. Joshua has ₱ 93. He bought a snack worth ₱45. How much
money does he have left? _____
9. Mary Jane baked 35 cookies. Her friend baked 24 cookies. What is
the difference between their cookies? _____

41. 8. Joshua has ₱ 93. He bought a snack worth ₱45. How much money does he
have left?
93 = 90 + 3 = 80 + 13
- 45 = - 40 + 5 = 40 + 5
40 + 8 = 48
She was left with
48 pesos.
35 = 30 + 5
- 24 = 20 + 4
10 + 1 = 11
9. Mary Jane baked 35 cookies. Her friend baked 24 cookies. What is
the difference between their cookies?
11 is the difference of
their cookies

42. 10. Mother bought 1 dozen of eggs. She used some in making bread.
She has 7 pieces left. How many eggs were used in making bread?
_____
11. Nolan saw 15 monkeys, 12 crocodiles, and 32 birds in the zoo. How
many more birds did he see than the monkeys? _____
12. Tanya has 24 lollipops. She gave her sister 5 and kept 5 for herself.
How many lollipops does she have left to share with her friends? _____
13. Kevin has 41 stickers. He gave his friend Dave 16 stickers. How
many stickers does he have left? _____

43. 10. Mother bought 1 dozen of eggs. She used some in making bread. She has 7 pieces left. How
many eggs were used in making bread?
1 dozen eggs= 12 eggs 12 – 7 = 5
5 eggs were used
in making bread
11. Nolan saw 15 monkeys, 12 crocodiles, and 32 birds in the zoo. How many more
birds did he see than the monkeys?
32 birds - 15 monkeys = 32 – 15 = 17
He saw 17 more birds than monkeys.

44. We take away 5 + 5 = 10 from 24. 24 – 10 = 14
She has 14 lollipops to share with her friends
Kevin was left with 25 stickers
12. Tanya has 24 lollipops. She gave her sister 5 and kept 5 for herself. How
many lollipops does she have left to share with her friends?
13. Kevin has 41 stickers. He gave his friend Dave 16 stickers. How
many stickers does he have left? _____
41 = 40 + 1 = 30 + 11
- 16 = 10 + 6 = 10 + 6
20 + 5 = 25

46. III. Challenge

47. 1. Joel’s age is 3 tens and 13 ones. How old is he?
2. Mother bought a dozen doughnut. Her children ate 9
pieces’ doughnuts. How many doughnuts were left?
3. Liezl has 89 pieces of popsicle sticks. How many more does
she need to make a 10 bundles of ten popsicle sticks?
4. What is the answer when you take away 15 from 3 tens and
11 ones?

48. 1. Joel’s age is 3 tens and 13 ones. How old is he?
2. Mother bought a dozen doughnut. Her children ate 9 pieces’
doughnuts. How many doughnuts were left?
3 tens and 13 ones is 30 + 13 = 43
Joel is 43 years old
A dozen is 12,
12 – 9 = 3
Only 3 doughnuts
were left

49. 3. Liezl has 89 pieces of popsicle sticks. How many more does
she need to make a 10 bundles of ten popsicle sticks?
4. What is the answer when you take away 15 from 3 tens and
11 ones?
10 bundles of 10 is 100. She has 89 pieces,
100 – 89 = 11
She needs 11 more pieces.
3 tens and 11 ones is 30 + 11 = 41
41 – 15 = 26
26

50. 5. Elvie has 25 candies. She gave some to her friend. Now she
has 13 left. How many candies did she give to her friend?
6.Joan’s weight is 34 kilograms. Jade’s weight is 42 kilograms.
Who is heavier? by how much?

51. 5. Elvie has 25 candies. She gave some to her friend. Now she has 13 left. How
many candies did she give to her friend?
6. Joan’s weight is 34 kilograms. Jade’s weight is 42 kilograms. Who is heavier? by
how much?
25 = 20 + 5
- 13 = - 10 + 3
10 + 2 = 12
42 = 40 + 2 = 30 + 12
- 34 = -30 + 4 = - 30 + 4
0 + 8 = 8
25
- ____
13
She gave 12
candies to her
friends
Jade is heavier
by 8 kilograms.
34 < 42

52. 7.Aunt Riza gave Jolo ₱45.00 while aunt Belle gave him ₱54.00.
Who gave him more money? by how much?
8.If 2 tens and 15 ones taken away from 52, what is the answer?

53. 7. Aunt Riza gave Jolo ₱45.00 while aunt Belle gave him ₱54.00. Who gave him
more money? by how much?
8. If 2 tens and 15 ones taken away from 52, what is the answer?
52 = 50 + 2 = 40 + 12
- 35 = -30 + 5 = - 30 + 5
10 + 7 = 17
17
54 = 50 + 4 = 40 + 14
- 45 = -40 + 5 = - 40 + 5
0 + 9 = 9
Belle gave him
more, 9 pesos.
45 < 54
2 tens and 15 ones
20 + 15
35

54. 9.What is the difference when you subtract 38 from 3 tens
and 23 ones?
10. George ordered 24 pieces of ball pens. He gave 8 of it
to his brother and 6 to his friend. How many ball pens
does he have left?

55. 9. What is the difference when you subtract 38 from 3 tens and 23 ones?
10. George ordered 24 pieces of ball pens. He gave 8 to his brother and 6 to his
friend. How many ball pens does he have left?
24 = 20 + 4
- 14 = -10 + 4
10 + 0 = 10
He is left with
10 ball pens.
8 + 6 = 14
53 = 50 + 3 = 40 + 13
- 38 = -30 + 8 = - 30 + 8
10 + 5 = 15
15
3 tens and 23 ones
30 + 23
53

56. fgm 2023

57. fgm 2023