EduSahara™ Worksheet

EduSahara™ Assignment

Name : Product of Numbers using Algebraic Identities

Chapter : Special Products and Expansions

Grade : ICSE Grade VIII

License : Non Commercial Use

Question 1

1.

The value of
39
✕
39
is

(i)

1520
(ii)

1519
(iii)

1523
(iv)

1522
(v)

1521

Question 2

2.

The value of
900

1
2
✕
900

1
2
is

(i)

810899

3
4
(ii)

810900

3
4
(iii)

810900

1
6
(iv)

810900

1
2
(v)

810900

1
4

Question 3

3.

The value of
89
✕
89
is

(i)

7922
(ii)

7920
(iii)

7924
(iv)

7918
(v)

7921

Question 4

4.

The value of
89

1
3
✕
89

1
3
is

(i)

7980

4
7
(ii)

7980

4
11
(iii)

7980

2
9
(iv)

7980

4
9
(v)

7980

2
3

Question 5

5.

The value of
18
✕
2
is

(i)

38
(ii)

35
(iii)

33
(iv)

37
(v)

36

Question 6

6.

The value of
20

1
2
✕
19

1
2
is

(i)

399

1
2
(ii)

400

1
4
(iii)

399

1
4
(iv)

400

1
2
(v)

399

3
4

Question 7

7.

The value of
28
✕
28
is

(i)

784
(ii)

781
(iii)

785
(iv)

783
(v)

787

Question 8

8.

The value of
700

2
3
✕
700

1
2
is

(i)

490820
(ii)

490814
(iii)

490818
(iv)

490816
(v)

490817

Question 9

9.

The value of
39
✕
33
is

(i)

1286
(ii)

1285
(iii)

1287
(iv)

1288
(v)

1290

Question 10

10.

The value of
8

1
2
✕
8

2
3
is

(i)

74

1
3
(ii)

75
(iii)

73

2
3
(iv)

73
(v)

73

2
5

Question 11

11.

The value of
606
✕
593
is

(i)

359360
(ii)

359355
(iii)

359357
(iv)

359359
(v)

359358

Question 12

12.

The value of
400

1
2
✕
399

1
3
is

(i)

159934
(ii)

159932
(iii)

159935
(iv)

159931
(v)

159933

Question 13

13.

Evaluate :
995 2
−
5 2

(i)

990000
(ii)

990005
(iii)

9900000
(iv)

990995
(v)

99000

Question 14

14.

Find
407 3

(i)

67419143
(ii)

67419163
(iii)

67419133
(iv)

67419123
(v)

67419153

Question 15

15.

Find
96 3

(i)

884716
(ii)

884736
(iii)

884756
(iv)

884746
(v)

884726

Question 16

16.

(i)

(-1000000)
(ii)

(-8000)
(iii)

1000000
(iv)

(-90000)
(v)

8000

Question 17

17.

(i)

-7077.888
(ii)

-2102.4
(iii)

-1000
(iv)

7077.888
(v)

1000

Assignment Key