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Worksheets

Mental Math

Total questions: 70

Worksheet time: 24mins

Name
Class
Date
1.

10 - 1 =

a)

11

b)

9

c)

8

d)

12

2.

9 x 3 =

a)

27

b)

18

c)

36

d)

25

3.
6300 ÷ 9
a)
70
b)
60
c)
600
d)
700
4.

43 + 35

a)

87

b)

77

c)

78

d)

88

5.

437 + 55

a)

982

b)

482

c)

483

d)

492

6.
47 + 25
a)
62
b)
72
c)
52
d)
82
7.

Add using mental math:

45

+24

____

a)

21

b)

88

c)

96

d)

69

8.
Add using mental math:
  25
+ 14
____
a)
39
b)
24
c)
10
d)
31
9.

Add using mental math:

84

+12

____

a)

72

b)

96

c)

76

d)

92

10.
Add using mental math:
  44
+22
____
a)
66
b)
10
c)
22
d)
55
11.

Add using mental math:

35

+14

____

a)

22

b)

66

c)

88

d)

49

12.
Add using mental math:
  50
+25
____
a)
75
b)
100
c)
25
d)
30
13.
Add using mental math:
  25
+25
____
a)
50
b)
100
c)
77
d)
88
14.

Add using mental math:

90

+10

____

a)

80

b)

100

c)

50

d)

45

15.
Subtract using mental math:
  45
- 24
____
a)
21
b)
30
c)
25
d)
69
16.

Subtract using mental math:

62

- 20

____

a)

82

b)

22

c)

42

d)

54

17.
Subtract using mental math:
  73
- 12
____
a)
61
b)
65
c)
85
d)
74
18.

Subtract using mental math:

96

- 45

____

a)

91

b)

24

c)

58

d)

51

19.
Subtract using mental math:
  88
- 34
____
a)
54
b)
86
c)
10
d)
72
20.

Subtract using mental math:

66

- 20

____

a)

44

b)

22

c)

46

d)

86

21.
Subtract using mental math:
  56
- 24
____
a)
32
b)
70
c)
80
d)
36
22.

Subtract using mental math:

50

- 48

____

a)

98

b)

9

c)

2

d)

100

23.
Subtract using mental math:
  50
- 10
____
a)
40
b)
60
c)
30
d)
10
24.

Subtract using mental math:

75

- 25

____

a)

25

b)

50

c)

75

d)

100

25.

How may shoes are there in 10 pair ? ( 1 pair = 2 shoes )

a)

30

b)

10

c)

20

d)

19

26.

73 + 6 = _________________

a)

89

b)

79

c)

86

d)

78

27.

There are __________ wheels on 5 bicycles.

a)

16

b)

18

c)

10

d)

14

28.

7 + ______________ = 1007

a)

1000

b)

100

c)

900

d)

1005

29.

What is 100 more than 50?

a)

105

b)

150

c)

51

d)

501

30.

_________ + 8 = 16

a)

4

b)

6

c)

10

d)

8

31.

400 + 400 =

a)

8

b)

80

c)

800

d)

80000

32.

6 x 6 =

a)

1

b)

36

c)

6

d)

37

33.

9 x 5 =

a)

68

b)

45

c)

89

d)

90

34.

8 x 6 =

a)

48

b)

14

c)

40

d)

44

35.

There were 50 birds on a tree. Out of them 25 flew away. How many birds are left on the tree?

a)

75

b)

30

c)

50

d)

25

36.

Mrs. Dar had 21 students in her class. 2 students moved away. Then 6 new students joined the class. How many students are in Mrs. Dar's class now?

a)

17

b)

27

c)

25

d)

18

37.

2360 - ___________________ = 0

a)

36

b)

2360

c)

0

d)

1

38.

40 + 12 = ______

a)

42

b)

24

c)

62

d)

52

39.
60 + 30 = ______
a)
100
b)
30
c)
90
d)
80
40.
50 + 25 = ______
a)
65
b)
70
c)
75
d)
76
41.
4 x 5 = ______
a)
20
b)
25
c)
16
d)
22
42.
12 - 10 = ______
a)
2
b)
5
c)
22
d)
11
43.
30 + 18 = ______
a)
38
b)
50
c)
48
d)
44
44.
15 + 20 = ______
a)
5
b)
12
c)
45
d)
35
45.
50 + 20 = ______
a)
70
b)
80
c)
30
d)
65
46.

What is the halfway point between 70 and 80.

a)

74

b)

75

c)

73

d)

77

47.
500 + 250 = ______
a)
750
b)
1,000
c)
525
d)
700
48.
We have 20 students in our class. If half of them leave the classroom. How many students are left?
a)
20 students
b)
10 desks
c)
12 students
d)
10 students
49.

48 - 25

a)

23

b)

13

c)

25

d)

20

50.

35 + 45

a)

70

b)

80

c)

90

d)

95

51.

53 + 58

a)

111

b)

101

c)

1011

d)

98

52.

62 - 55

a)

12

b)

13

c)

7

d)

5

53.

18 + 18

a)

36

b)

40

c)

46

d)

26

54.

48 - 23

a)

23

b)

13

c)

25

d)

20

55.

35 + 35

a)

80

b)

70

c)

60

d)

85

56.

80 - 47

a)

27

b)

33

c)

37

d)

23

e)

31

57.

56 + 58

a)

114

b)

104

c)

1014

d)

102

58.

62 - 45

a)

22

b)

23

c)

17

d)

15

59.

70 + 70

a)

140

b)

170

c)

114

d)

130

60.

What is 400 + 700

a)

100

b)

1000

c)

1100

d)

340

61.

What is 9x9?

a)

72

b)

81

c)

34

d)

45

62.
8 + 7
a)
15
b)
13
c)
11
d)
14
63.

11 + 11

a)

23

b)

22

c)

25

d)

27

64.

16 − 13 =

a)

3

b)

0

c)

2

d)

26

65.
9 x 8
a)
72
b)
63
66.
Select the multiplication sentence for the following array:
a)
3 x 3 = 9
b)
5 x 9 = 45
c)
2 x 3 = 6
d)
1 x 6 = 6
67.
Raleigh has 24 cookies.  4 kids share them equally.  How many cookies does each kid get?
a)
28
b)
24
c)
20
d)
6
68.

18 + 22

a)

30

b)

40

c)

50

d)

38

69.

29 + 60

a)

69

b)

79

c)

99

d)

89

70.
600 x 4
a)
240
b)
2400
c)
2300
d)
24