EduSahara™ Worksheet

EduSahara™ Assignment

Name : Finding Product of Numbers Using Identities

Chapter : Expansions

Grade : ICSE Grade IX

License : Non Commercial Use

Question 1

1.

The value of
806
✕
806
is

(i)

649637
(ii)

649638
(iii)

649636
(iv)

649634
(v)

649635

Question 2

2.

The value of
61

1
2
✕
61

1
2
is

(i)

3781

3
4
(ii)

3782

3
4
(iii)

3782

1
6
(iv)

3782

1
4
(v)

3782

1
2

Question 3

3.

The value of
799
✕
799
is

(i)

638401
(ii)

638403
(iii)

638400
(iv)

638402
(v)

638398

Question 4

4.

The value of
899

1
2
✕
899

1
2
is

(i)

809100

1
2
(ii)

809100

1
4
(iii)

809100

3
4
(iv)

809099

3
4
(v)

809100

1
6

Question 5

5.

The value of
85
✕
75
is

(i)

6376
(ii)

6378
(iii)

6372
(iv)

6374
(v)

6375

Question 6

6.

The value of
41

1
3
✕
38

2
3
is

(i)

1598
(ii)

1598

2
7
(iii)

1598

4
9
(iv)

1598

2
11
(v)

1598

2
9

Question 7

7.

The value of
706
✕
703
is

(i)

496318
(ii)

496321
(iii)

496317
(iv)

496315
(v)

496319

Question 8

8.

The value of
81

1
2
✕
80

1
2
is

(i)

6560

1
2
(ii)

6561

1
2
(iii)

6561

1
4
(iv)

6560

1
4
(v)

6560

3
4

Question 9

9.

The value of
66
✕
66
is

(i)

4355
(ii)

4353
(iii)

4358
(iv)

4357
(v)

4356

Question 10

10.

The value of
99

2
3
✕
98

1
2
is

(i)

9816

5
6
(ii)

9817

1
6
(iii)

9817

1
2
(iv)

9817

1
4
(v)

9817

1
8

Question 11

11.

The value of
307
✕
294
is

(i)

90259
(ii)

90260
(iii)

90256
(iv)

90258
(v)

90257

Question 12

12.

The value of
41

1
3
✕
39

3
4
is

(i)

1642
(ii)

1645
(iii)

1640
(iv)

1643
(v)

1644

Assignment Key