EduSahara™ Assignment
Name : Properties of Integers
Chapter : Number System
Grade : ICSE Grade VII
License : Non Commercial Use
Question
1
1.
Which of the following are true?
a)
10
+
11
=
11
+
10
b)
6
✕
10
=
10
✕
6
c)
16
÷
6
=
6
÷
16
d)
11
−
16
=
16
−
11
(i)
{c,d,a}
(ii)
{c,a}
(iii)
{c,b,a}
(iv)
{a,b}
(v)
{d,b}
Question
2
2.
Which of the following are true?
a)
9
✕
(
13
✕
3
)
=
(
9
✕
13
)
✕
3
b)
17
÷
(
9
÷
13
)
=
(
17
÷
9
)
÷
13
c)
13
+
(
3
+
17
)
=
(
13
+
3
)
+
17
d)
3
−
(
17
−
9
)
=
(
3
−
17
)
−
9
(i)
{b,a}
(ii)
{b,c,a}
(iii)
{d,c}
(iv)
{a,c}
(v)
{b,d,a}
Question
3
3.
Which of the following are true?
a)
18
÷
(
2
+
4
)
=
(
18
÷
2
)
+
(
18
÷
4
)
b)
2
✕
(
4
+
15
)
=
(
2
✕
4
)
+
(
2
✕
15
)
c)
4
✕
(
15
−
18
)
=
(
4
✕
15
)
−
(
4
✕
18
)
d)
15
−
(
18
✕
2
)
=
(
15
−
18
)
✕
(
15
−
2
)
(i)
{d,c}
(ii)
{a,d,b}
(iii)
{b,c}
(iv)
{a,b}
(v)
{a,c,b}
Question
4
4.
Which of the following are true?
a)
integers are closed under subtraction
b)
integers are closed under multiplication
c)
integers are closed under addition
d)
integers are closed under division
(i)
{d,a,b}
(ii)
{d,a}
(iii)
{d,c}
(iv)
{d,b}
(v)
{a,b,c}
Question
5
5.
Which of the following are true?
a)
7
−
4
=
4
−
7
b)
13
+
7
=
7
+
13
c)
4
÷
10
=
10
÷
4
d)
10
✕
13
=
13
✕
10
(i)
{a,b}
(ii)
{b,d}
(iii)
{a,d,b}
(iv)
{c,d}
(v)
{a,c,b}
Question
6
6.
Which of the following are true?
a)
6
−
(
13
−
9
)
=
(
6
−
13
)
−
9
b)
9
✕
(
19
✕
6
)
=
(
9
✕
19
)
✕
6
c)
13
÷
(
9
÷
19
)
=
(
13
÷
9
)
÷
19
d)
19
+
(
6
+
13
)
=
(
19
+
6
)
+
13
(i)
{c,d}
(ii)
{a,b}
(iii)
{b,d}
(iv)
{a,c,b}
(v)
{a,d,b}
Question
7
7.
Which of the following are true?
a)
11
✕
(
5
−
6
)
=
(
11
✕
5
)
−
(
11
✕
6
)
b)
10
✕
(
11
+
5
)
=
(
10
✕
11
)
+
(
10
✕
5
)
c)
5
−
(
6
✕
10
)
=
(
5
−
6
)
✕
(
5
−
10
)
d)
6
÷
(
10
+
11
)
=
(
6
÷
10
)
+
(
6
÷
11
)
(i)
{c,d,a}
(ii)
{c,b,a}
(iii)
{c,a}
(iv)
{a,b}
(v)
{d,b}
Assignment Key
1) (iv)
2) (iv)
3) (iii)
4) (v)
5) (ii)
6) (iii)
7) (iv)
