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Worksheets

Mental maths

Total questions: 63

Worksheet time: 5mins

Name
Class
Date
1.

Add 8, 9 and 4

a)

17

b)

20

c)

21

d)

25

2.

17 take away 8

a)

9

b)

10

c)

11

d)

12

3.

Which is the missing number: 7 + ___ = 20

a)

10

b)

12

c)

13

d)

14

4.

75 subtract 40

a)

30

b)

35

c)

40

d)

45

5.

Which number sentence is wrong?

a)

8 + 5 = 13

b)

13 - 5 = 8

c)

5 + 8 = 13

d)

8 - 5 = 13

6.

5 + 10 = 8 + ___

a)

5

b)

6

c)

7

d)

8

7.

____ - 9 = 6

a)

13

b)

14

c)

15

d)

16

8.

What is the time on this clock?

a)

25 to 3

b)

25 past 3

c)

25 to 2

d)

25 past 2

9.

What fraction is shaded?

a)

three quarters

b)

two thirds

c)

quarter

d)

third

10.

Which of these pictures has more than one line of symmetry?

a)
b)
c)
d)
11.

Which of these numbers does not round off to 90?

a)

87

b)

94

c)

85

d)

98

12.

What is the time on this clock?

a)

five past one

b)

5 to 12

c)

five minutes to 1

d)

5 past 12

13.

What shape is this?

a)

pentagon

b)

octagon

c)

hexagon

d)

pyramid

14.

What is the place value of the underlined digit? 129

a)

H

b)

Units

c)

Ten

d)

T

15.

Round off 4 to the nearest 10.

a)

10

b)

20

c)

0

d)

5

16.

1cm = ____mm

a)

1

b)

5

c)

10

d)

100

17.

18 + 35 = ?

a)

35

b)

53

c)

43

d)

63

18.

What must be added to seventy-five to make one hundred?

a)

30

b)

15

c)

25

19.

How many metres in six hundred centimetres?

a)

60m

b)

6000m

c)

600m

d)

6m

20.

What is half of two thousand four hundred?

a)

1004

b)

1002

c)

1200

d)

1020

21.
2 x 8 =
a)
10
b)
14
c)
8
d)
16
22.
4 x 5 =
a)
20
b)
9
c)
16
d)
25
23.

Double 340

a)

677

b)

680

c)

889

d)

567

24.
6 x 6 =
a)
30
b)
36
c)
35
d)
12
25.
Listen to these numbers: 31, 36, 45.  Which one is a multiple of 5?
a)
31
b)
36
c)
45
d)
31, 36, 45
26.
Write the next number in the sequence: 18, 27, 36 ...
a)
9
b)
45
c)
63
d)
54
27.
Write down the third multiple of 8.
a)
32
b)
16
c)
20
d)
24
28.
What is the next multiple of 10 after 77?
a)
70
b)
80
c)
100
d)
87
29.
Pencils come in packets of 6.  How many packets would be needed for 54 pencils?
a)
6
b)
7
c)
8
d)
9
30.
I am thinking of a number.  I multiply it by 10 and the answer I get is 2300.  What number am I thinking of?
a)
10
b)
23
c)
100
d)
230
31.
What are 4 lots of 30?
a)
12
b)
34
c)
120
d)
1200
32.
I buy 3 stamps at 26c each.  How much do I spend?
a)
60c
b)
72c
c)
78c
d)
90c
33.
What is one third of 18?
a)
6
b)
9
c)
12
d)
18
34.
John has €1.50 left.  It is a quarter of his pocket money.  How much pocket money is he given? 
a)
€2.00
b)
€3.50
c)
€4.00
d)
€6.00
35.
Write 642 to the nearest hundred.
a)
600
b)
640
c)
700
d)
742
36.
What is 68 more than 249?
a)
181
b)
317
c)
319
d)
327
37.
Find the difference between 87 and 102.
a)
15
b)
22
c)
25
d)
189
38.
A carton of milk holds 1 litre.  If 370 ml are used, how much milk is left?
a)
330 ml
b)
530 ml
c)
630 ml 
d)
730 ml
39.
I am thinking of a number.  I double it.  The answer I get is 640.  What number am I thinking of?
a)
32
b)
64
c)
320
d)
1280
40.
Listen to this sequence: 0.9, 1.1, 1.3.  Which number comes next?
a)
1.2
b)
1.3
c)
1.4
d)
1.5
41.
What is 34 hundredths as a decimal?
a)
34.34
b)
3.4
c)
3.04
d)
0.34
42.
Listen to this sequence: 0.9, 1.1, 1.3.  Which number comes next?
a)
1.2
b)
1.3
c)
1.4
d)
1.5
43.

How many days in 2 weeks?

a)

20

b)

9

c)

14

d)

6

44.

How many months are there in a year?

a)

4

b)

8

c)

12

d)

16

45.

How many lines of symmetry does a rectangle have?

a)

2

b)

3

c)

4

d)

8

46.

What is the perimeter of a square of sides 5cm each?

a)

20cm

b)

25cm

c)

10cm

d)

50cm

47.

How many lots of four in thirty two?

a)

6

b)

7

c)

8

d)

9

48.

odd + odd + odd=

a)

odd

b)

even

c)

can't tell

49.

How many quarters in two wholes?

a)

4

b)

8

c)

12

d)

16

50.

Round 624 to the nearest ten.

a)

500

b)

620

c)

700

d)

650

51.

How many centimetres in twelve metres?

a)

12000cm

b)

1200cm

c)

120cm

d)

12cm

52.

What is nineteen less than seventy four?

a)

58

b)

45

c)

60

d)

55

53.

105 stickers are shared among 5 friends. How many stickers did each child get?

a)

42

b)

31

c)

21

d)

25

54.

What is 27 multiplied by 6?

a)

132

b)

142

c)

152

d)

162

55.

What is the value of the 4 in the number 549 632

a)

hundred thousands

b)

ten thousands

c)

40 000

d)

400 000

56.

What place value is the 7 in in the number: 4 521 735?

a)

thousands

b)

tens

c)

hundreds

d)

hundred thousands

57.

 1220\frac{12}{20}  Simplify this fraction

a)

 210\frac{2}{10}  

b)

 45\frac{4}{5}  

c)

 35\frac{3}{5}  

d)

 611\frac{6}{11}  

58.

Which digit is in the tenths column? 34.291

a)

3

b)

9

c)

1

d)

2

59.

What number would complete this pattern? 12, 20, 28, 36

a)

44

b)

40

c)

20

d)

12

60.

34.2 X 10

a)

34.20

b)

342

c)

3420

d)

34200

61.

How many minutes are there in three hours

a)

300 minutes

b)

30 minutes

c)

80 minutes

d)

180 minutes

62.

What must be added to zero point three to get two?

a)

1.7

b)

2.7

c)

2

d)

5

e)

0.5

63.

What is five point three divided by ten?

a)

0.0053

b)

0.053

c)

53

d)

0.53