# TOÁN Tiếng Anh Lớp 1

Skills I

Exercise Book

Topics
:
Subtraction within 100
Regrouping and Number bonds
Addition crossword and word search activity
Funny Face images

Addition and Subtraction up to 100
Addition and subtraction are arguably the most important math
topics for every first grade mathematics student.
The memorization of number bonds and the ‘ feeling’ with
numbers come with the ability to add and subtract numbers
without to much thinking.

Math topics in future school years all elaborate on these
important skills. It might be true that endless pages of number
crunching materials seem to have no meaning to students, but
these skills are so important that we advice every teacher, parent
or student to print this booklet and do all pages! The result will
be ta lot of confidence in math!
all levels. For the weaker and the stronger! It’s just like a video game;
the more you practice, the better you get!
This booklet is part of our Math in English Skills Series which is
based on core math topics underlying the application of math!
from our website.

Calculate
12
+ 9

33
+ 18

24
+ 17

72
+ 9

46
+ 25

17
+ 34

78
+ 13

26
+ 25

20
+ 41

14
+ 47

33
+ 28

44
+ 47

15
+ 76

41
+ 20

19
+ 22

32
+ 9

43
+ 8

54
+ 17

88
+ 3

72
+ 19

65
+ 16

45
+ 26

43
+ 18

87
+ 4

23
+ 48

55
+ 36

Page 1

Calculate
21
- 10

43
- 12

56
78
- 25

35
- 14

40
- 19
7

77
- 36

23
- 12

84
- 23

90
- 49

64
- 33

33
- 22

54
- 23

75
- 14

41
- 20

89
- 28

30
- 9

43
- 12

54
- 3

88
- 47

72
- 11

65

46

53

87

90

- 14

- 25

- 12

- 6

- 29

Calculate
13
+ 9

44
+ 18

24
+ 18

52
+ 10

41
+ 21

16
+ 36

73
+ 19

26
+ 26

27
+ 45

18
+ 44

34
+ 28

44
+ 48

15
+ 77

42
+ 20

19
+ 23

30
+ 22

43
+ 29

54
+ 18

25
+ 37

72
+ 20

55
+ 17

44
+ 28

41
+ 11

87
+ 5

23
+ 49

53
+ 39

Calculate
21
- 8

81
- 18

35
- 12

78
- 5

61
- 18

77
- 34

23
- 10

84
- 21

90
- 47

64
- 31

32
- 29

54
- 21

75
- 12

41
- 18

89
- 26

31
- 8

43
- 20

54
- 1

88
- 45

72
- 19

65
- 12

46
- 23

53
- 10

87
- 4

90
- 27

56
- 23

Time to have some fun now and solve this crossword puzzle!

Across
1.
3.
6.
8.
10.
12.
14.

25 + 48
46 + 16
69 + 15
18 + 56
14 + 5
39 + 17
29 + 17

Down
16. 18 + 18
19.
7 + 18
21. 25 + 50
23.
9 + 77
25. 14 + 31
27. 28 + 21
28. 12 + 25

2.
4.
5.
7.
9.
11.
13.

15 + 23
8 + 19
53 + 18
28 + 17
25 + 15
87 + 7
56 + 7

15.
17.
18.
20.
22.
24.
26.

24 + 38
8 + 59
12 + 26
5 + 49
12 + 46
29 + 35
37 + 16

Calculate
45
+ 9

33
+ 11

27
+ 17

72
+ 12

46
+ 28

37
+ 37

78
+ 16

26
+ 28

23
+ 41

14
+ 40

33
+ 21

47
+ 47

15
+ 79

41
+ 23

52
+ 32

42
+ 22

43
+ 11

54
+ 10

88
+ 6

72
+ 12

58
+ 16

45
+ 29

43
+ 11

87
+ 7

26
+ 48

55
+ 19

Calculate
41
- 17

43
- 29

35
- 11

78
- 4

40
- 16

67
- 33

83
- 19

84
- 20

90
- 46

62
- 38

43
- 29

54
- 20

75
- 11

41
- 27

89
- 25

50
- 6

63
- 29

54
- 20

88
- 44

72
- 18

45
- 11

46
- 22

53
- 19

87
- 3

90
- 26

66
- 22

Calculate
16
+ 9

40
+ 15

24
+ 11

52
+ 13

44
+ 31

24
+ 31

73
+ 12

26
+ 29

27
+ 48

18
+ 47

37
+ 28

44
+ 41

15
+ 60

43
+ 22

19
+ 26

70
+ 15

49
+ 26

56
+ 19

25
+ 30

72
+ 23

48
+ 17

44
+ 21

41
+ 14

87
+ 8

23
+ 42

56
+ 39

Calculate
42
- 6

81
- 15

35
- 19

78
- 2

61
- 15

77
- 31

40
- 14

84
- 28

90
- 44

64
- 39

32
- 26

54
- 28

75
- 19

41
- 15

89
- 23

31
- 5

43
- 27

54
- 18

88
- 42

72
- 16

65
- 19

44
- 28

53
- 17

87
- 1

90
- 24

56
- 20

Use your addition and subtraction skills to calculate the clues and find the

O

X

E

F

P

D

S

M

J

B

S

W S

I

I

O

M

B

I

I

I

W C

P

S

X

T

C

G F

Z

W Q N

X

T

A

V

R

T

J

Y

Z

H T

Z

V

K

T

Y

T

F

K

I

H

T

T

A

T

Y

W N

E

T

G O

Y

L

T

H

H

N

P

Y

S

Q

E

R

U

R

N

F

N H

G

E

Z

E

I

N

I

Y

T

H G

I

E

O

I

V

W I

X

H

K

Y

N

I

D

Z

V

H U

E

E

S

G T

E

E

S

T

K

X

G

A

C

X

R

S

Y

H N

I

R

U

O

F

Y

T

N

E

W T

X

R

T

G N

I

N

E

T

Y

S

I

X R

G

H

H R D

R

G

V

A

W K

M X

Y

T

G Z

O

D

H

X

B

A

S

P

V D

H

S

F

B J

J

F

Z

X

Y

L

H

J

F

R

V

H

D

A N

J

W G

W N Z

S

P

H B

M

20 + 20
28 + 28
24 + 24
4+ 4

V

16 + 16
8 + 8
12 + 12
48 + 48

O H M

I

T

H

V
I

32 + 32
40 + 40
44 + 44
36 + 36

Page 10

Calculate
35
+ 21

33
+ 13

27
+ 19

72
+ 14

46
+ 20

37
+ 39

78
+ 18

26
+ 20

23
+ 43

14
+ 42

33
+ 23

47
+ 49

15
+ 71

41
+ 25

54
+ 32

42
+ 24

43
+ 13

54
+ 12

88
+ 8

72
+ 14

58
+ 18

45
+ 21

43

+ 13

87

+

58
+ 18

Page 11

9

26

+ 40

Page 12

Calculate
82
- 25

43
- 26

35
- 18

78
- 1

40
- 13

67
- 30

83
- 16

87
- 20

90
- 43

62
- 35

43
- 26

64
- 17

75
- 18

44
- 27

89
- 22

52
- 5

60
- 23

54
- 27

88
- 41

72
- 15

45
- 18

46
- 29

53
- 16

87
- 20

90
- 23

66
- 29

Calculate
88
+ 9

40
+ 17

24
+ 13

52
+ 15

44
+ 33

24
+ 33

73
+ 14

26
+ 21

27
+ 40

18
+ 49

37
+ 20

44
+ 43

15
+ 62

43
+ 24

19
+ 28

70
+ 17

49
+ 28

56
+ 11

25
+ 32

72
+ 25

48
+ 19

44
+ 23

43
+ 14

89
+ 8

23
+ 44

56
+ 31

Calculate
76
- 8

81
- 13

35
- 17

78
- 30

61
- 23

77
- 39

40
- 12

84
- 26

90
- 42

64
- 36

32
- 24

54
- 26

75
- 17

41
- 13

89
- 21

31
- 3

43
- 25

54
- 16

88
- 40

72
- 14

65
- 17

44
- 26

53
- 15

87
- 9

90
- 22

56
- 18

Color by number fun with addition and subtraction!

17

25
44
11

11

17

7
11

7

20

17

11

12

7

11

11

59

44

25

32

32

32

32
44
12

100 - 88 green
100 - 75 red
100 - 68 white
100 - 56 pink

100 - 83 yellow
100 - 41 dark green
100 - 89 orange
100 - 80 purple

Calculate
55
+ 44

33
+ 16

27
+ 12

72
+ 17

46
+ 23

37
+ 32

78
+ 11

26
+ 23

20
+ 49

14
+ 45

36
+ 23

47
+ 42

15
+ 74

41
+ 28

44
+ 35

42
+ 27

43
+ 16

54
+ 15

68
+ 21

72
+ 17

57
+ 12

45
+ 24

43
+ 16

87
+ 2

26
+ 43

58
+ 11

Calculate
35
- 16

43
- 24

35
- 16

78
- 9

40
- 11

67
- 38

83
- 14

87
- 28

90
- 41

62
- 33

43
- 24

64
- 15

75
- 16

44
- 25

89
- 20

52
- 3

60
- 21

54
- 25

88
- 49

72
- 13

45
- 16

46
- 27

53
- 14

87
- 28

90
- 21

66
- 27

Calculate
11
+ 9

12
+ 8

14
+ 6

12
+ 18

14
+ 16

24
+ 16

23
+ 17

26
+ 14

27
+ 13

18
+ 22

37
+ 13

24
+ 26

15
+ 35

33
+ 17

19
+ 31

39
+ 21

49
+ 11

46
+ 14

25
+ 35

42
+ 18

48
+ 22

44
+ 27

43
+ 27

62
+ 8

23
+ 47

16
+ 14

Page 18

Calculate
76
- 4

81
- 14

35
- 18

78
- 33

62
- 23

76
- 39

50
- 12

84
- 27

80
- 42

54
- 26

32
- 26

74
- 26

75
- 27

41
- 14

69
- 21

41
- 9

43
- 26

54
- 15

86
- 30

72
- 15

65
- 17

44
- 15

53
- 14

86
- 9

90
- 32

55
- 18

Can you fill in the missing addends?
(1) 12
+

= 17

(2) 45
+

= 53

(3) 8 +

= 13

(4) 11
+

= 20

(5) 23
+

= 27

(12) 17
+

= 25

(6) 16
+

= 22

(13) 15
+

= 24

(7) 16
+

= 19

(14) 14
+

= 23

(8) 10
+

= 17

(15) 25
+

= 34

(9) 22
+

= 31

(16) 32
+

= 40

(10 29
) +

= 36

(17) 17
+

= 23

(11) 11
+

= 17

(18) 12
+

= 17

Page 20

Calculate

Calculate

12
+ 9
21

33
+ 18
51

24
+ 17
41

21
- 10
11

43
- 12
31

35
- 14
21

55
+ 36
91

72
+ 9
81

46
+ 25
81

56
- 25
31

78
- 7
71

40
- 19
21

17
+ 34
51

78
+ 13
91

26
+ 25
51

20
+ 41
61

14
+ 47
61

77
- 36
41

23
- 12
11

84
- 23
61

90
- 49
41

64
- 33
31

33
+ 28
61

44
+ 47
91

15
+ 76
91

41
+ 20
61

19
+ 22
41

33
- 22
11

54
- 23
31

75
- 14
61

41
- 20
21

89
- 28
61

32
+ 9
41

43
+ 8
51

54
+ 17
71

88
+ 3
91

72
+ 19
91

30
- 9
21

43
- 12
31

54
- 3
51

88
- 47
41

72
- 11
61

65
+ 16
81

45
+ 26
71

43
+ 18
61

87
+ 4
91

23
+ 48
71

65
- 14
51

46
- 25
21

53
- 12
41

87
- 6
81

90
- 29
61

in

Page 1

English

in

Page 2

English

Calculate

Calculate

13
+ 9
22

44
+ 18
62

24
+ 18
42

21
- 8
13

81
- 18
63

35
- 12
23

53
+ 39
92

52
+ 10
62

41
+ 21
62

56
- 23
33

78
- 5
73

61
- 18
43

16
+ 36
52

73
+ 19
92

26
+ 26
52

27
+ 45
72

18
+ 44
62

77
- 34
43

23
- 10
13

84
- 21
63

90
- 47
43

64
- 31
33

34
+ 28
62

44
+ 48
92

15
+ 77
92

42
+ 20
62

19
+ 23
42

32
- 29
3

54
- 21
33

75
- 12
63

41
- 18
23

89
- 26
63

30
+ 22
52

43
+ 29
72

54
+ 18
72

25
+ 37
62

72
+ 20
92

31
- 8
23

43
- 20
23

54
- 1
53

88
- 45
43

72
- 19
53