EduSahara™ Worksheet

Question 1

1.

Which of the following is true?

(i)

4
5

✕

1
4

=

1
5
(ii)

6
7

✕

3
4

=

1

1
7
(iii)

11
19

÷

2
9

=

22
171
(iv)

8
17

+

2
16

=

47
136
(v)

16
18

−

2
3

=

14
9

Question 2

2.

8
✕
12
15
= ______

(i)

6
(ii)

32
7
(iii)

32
5
(iv)

32
3
(v)

34
5

Question 3

3.

Find the sum of the rational numbers at the points labelled with letters I and J

(i)

(
-91
10
)
(ii)

(
-37
4
)
(iii)

(
-75
8
)
(iv)

(
-19
2
)
(v)

(
-93
10
)

Question 4

4.

Find the missing value in
6
17
✕
______ =
2
17

(i)

1
2
(ii)

1
3
(iii)

1
4
(iv)

0
(v)

2
3

Question 5

5.

Which of the following are true?

a)	integers are closed under multiplication
b)	integers are closed under addition
c)	integers are closed under division
d)	integers are closed under subtraction

(i)

{c,a}
(ii)

{c,d}
(iii)

{a,b,d}
(iv)

{c,a,b}
(v)

{c,b}

Question 6

6.

Which of the following are true?

a)

18

−

(

12

✕

2

)

=

(

18

−

12

)

✕

(

18

−

2

)

b)

16

✕

(

18

−

12

)

=

(

16

✕

18

)

−

(

16

✕

12

)

c)

12

÷

(

2

+

16

)

=

(

12

÷

2

)

+

(

12

÷

16

)

d)

2

✕

(

16

+

18

)

=

(

2

✕

16

)

+

(

2

✕

18

)

(i)

{a,c,b}
(ii)

{a,b}
(iii)

{c,d}
(iv)

{b,d}
(v)

{a,d,b}

Question 7

7.

The decimal number -6.011 lies between

(i)

{-6.031,-6.021}
(ii)

{-6.021,-6.001}
(iii)

{-6.013,-6.012}
(iv)

{-6.001,-5.991}
(v)

{-6.010,-6.009}

Question 8

8.

Which of the following is true?

a)

6.2400

÷

(

4.3200

+

3.7000

)

=

(

6.2400

÷

4.3200

)

+

(

6.2400

÷

3.7000

)

b)

15.3700

−

(

6.2400

✕

4.3200

)

=

(

15.3700

−

6.2400

)

✕

(

15.3700

−

4.3200

)

c)

3.7000

✕

(

15.3700

−

6.2400

)

=

(

3.7000

✕

15.3700

)

−

(

3.7000

✕

6.2400

)

d)

4.3200

✕

(

3.7000

+

15.3700

)

=

(

4.3200

✕

3.7000

)

+

(

4.3200

✕

15.3700

)

(i)

{b,d}
(ii)

{a,b,c}
(iii)

{a,c}
(iv)

{a,d,c}
(v)

{c,d}

Question 9

9.

Find the missing value in
2
5
+
______ =
29
60

(i)

(
-1
12
)
(ii)

1
4
(iii)

1
10
(iv)

1
12
(v)

1
14

Question 10

10.

4
✕
7
4
= ______

(i)

7
(ii)

4
(iii)

6
(iv)

8
(v)

9

Question 11

11.

The decimal number 230.54 lies between

(i)

{229,230}
(ii)

{230,231}
(iii)

{231,232}
(iv)

{228,229}
(v)

{232,233}

Question 12

12.

The decimal number 467.893 lies between

(i)

{465,466}
(ii)

{467,468}
(iii)

{469,470}
(iv)

{468,469}
(v)

{466,467}

Question 13

13.

Which of the following are true?

a)

3

+

(

4

+

5

)

=

(

3

+

4

)

+

5

b)

5

÷

(

11

÷

3

)

=

(

5

÷

11

)

÷

3

c)

11

✕

(

3

✕

4

)

=

(

11

✕

3

)

✕

4

d)

4

−

(

5

−

11

)

=

(

4

−

5

)

−

11

(i)

{a,c}
(ii)

{d,c}
(iii)

{b,a}
(iv)

{b,c,a}
(v)

{b,d,a}

Question 14

14.

11
4
✕
17
= ______

(i)

185
4
(ii)

187
4
(iii)

187
2
(iv)

189
4
(v)

187
6

Question 15

15.

Find the missing value in
10
9
÷
______ =
50
153

(i)

17
5
(ii)

3
(iii)

17
3
(iv)

19
5
(v)

17
7

Question 16

16.

Which of the following are true?

a)

13

✕

19

=

19

✕

13

b)

19

+

9

=

9

+

19

c)

9

−

12

=

12

−

9

d)

12

÷

13

=

13

÷

12

(i)

{d,b}
(ii)

{c,a}
(iii)

{c,d,a}
(iv)

{c,b,a}
(v)

{a,b}

Question 17

17.

Which of the following is true?

a)

4.7800

÷

10.7800

=

10.7800

÷

4.7800

b)

10.0900

+

20.5400

=

20.5400

+

10.0900

c)

10.7800

✕

10.0900

=

10.0900

✕

10.7800

d)

20.5400

−

4.7800

=

4.7800

−

20.5400

(i)

{a,c,b}
(ii)

{b,c}
(iii)

{d,c}
(iv)

{a,b}
(v)

{a,d,b}

Question 18

18.

Which of the following decimal numbers lie between
8244.5042
and
8244.5043
?

(i)

8244.50432
(ii)

8244.50414
(iii)

8244.50426
(iv)

82445.0426
(v)

824.45043

Question 19

19.

Which of the following is true?

(i)

10
18

>

8
13
(ii)

2
4

>

1
17
(iii)

4
15

<

3
16
(iv)

1
2

<

6
18
(v)

7
17

<

2
13

Question 20

20.

The decimal number -20.3 lies between

(i)

{-20,-19}
(ii)

{-21,-20}
(iii)

{-19,-18}
(iv)

{-23,-22}
(v)

{-22,-21}

Question 21

21.

Find the difference of the rational numbers at the points labelled with letters D and E

(i)

-1
(ii)

(
-3
2
)
(iii)

1
2
(iv)

(
-1
2
)
(v)

(
-1
4
)

Question 22

22.

Find the difference between the values of numbers at point A and B

(i)

1
4
(ii)

(
-1
6
)
(iii)

(
-3
4
)
(iv)

(
-1
2
)
(v)

(
-1
4
)

Question 23

23.

The additive inverse of
(
-3
5
)
is

(i)

3
5
(ii)

(
-2
5
)
(iii)

0
(iv)

5
-3
(v)

5
3

Question 24

24.

Find the missing value in
8
3
+
______ =
136
33

(i)

16
11
(ii)

18
11
(iii)

14
11
(iv)

16
9
(v)

16
13

Question 25

25.

15
−
17
5
= ______

(i)

58
5
(ii)

56
5
(iii)

58
3
(iv)

12
(v)

58
7

Assignment Key