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
23
✕
23
is

(i)

530
(ii)

526
(iii)

532
(iv)

529
(v)

528

Question 2

2.

The value of
41

1
2
✕
41

1
2
is

(i)

1722

1
6
(ii)

1721

3
4
(iii)

1722

1
4
(iv)

1722

3
4
(v)

1722

1
2

Question 3

3.

The value of
395
✕
395
is

(i)

156025
(ii)

156027
(iii)

156026
(iv)

156022
(v)

156024

Question 4

4.

The value of
9

1
4
✕
9

1
4
is

(i)

85

11
16
(ii)

85

1
2
(iii)

85

7
16
(iv)

85

9
14
(v)

85

9
16

Question 5

5.

The value of
405
✕
395
is

(i)

159974
(ii)

159975
(iii)

159973
(iv)

159976
(v)

159978

Question 6

6.

The value of
900

1
4
✕
899

3
4
is

(i)

809999

5
6
(ii)

809999

13
16
(iii)

810000

1
16
(iv)

809999

15
16
(v)

810000

1
14

Question 7

7.

The value of
77
✕
78
is

(i)

6009
(ii)

6007
(iii)

6006
(iv)

6005
(v)

6004

Question 8

8.

The value of
800

2
3
✕
800

3
4
is

(i)

641134

1
4
(ii)

641134

1
6
(iii)

641133

5
6
(iv)

641133

5
8
(v)

641133

1
2

Question 9

9.

The value of
591
✕
594
is

(i)

351056
(ii)

351055
(iii)

351054
(iv)

351053
(v)

351052

Question 10

10.

The value of
899

2
3
✕
899

3
4
is

(i)

809475

1
14
(ii)

809475

1
4
(iii)

809475

1
10
(iv)

809475

1
12
(v)

809474

11
12

Question 11

11.

The value of
65
✕
51
is

(i)

3315
(ii)

3313
(iii)

3317
(iv)

3314
(v)

3316

Question 12

12.

The value of
10

2
3
✕
9

3
4
is

(i)

102
(ii)

106
(iii)

104
(iv)

105
(v)

103

Question 13

13.

Evaluate :
990 2
−
10 2

(i)

9800000
(ii)

980000
(iii)

980990
(iv)

98000
(v)

980010

Question 14

14.

Find
803 3

(i)

517781627
(ii)

517781647
(iii)

517781617
(iv)

517781637
(v)

517781607

Question 15

15.

Find
296 3

(i)

25934356
(ii)

25934336
(iii)

25934316
(iv)

25934326
(v)

25934346

Question 16

16.

(i)

343000
(ii)

1728000
(iii)

(-1728000)
(iv)

(-343000)
(v)

(-598500)

Question 17

17.

(i)

-373.248
(ii)

-64
(iii)

373.248
(iv)

64
(v)

-120.96

Assignment Key