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CBSE Class 7 Maths Worksheet

Algebraic Expressions - Addition and subtraction of algebraic expressions

1.

How much is x - 2y + 32 greater than 3x + 5y - 7

2.

How much is x2 - 2xy + 3y2 less than 2x2 - 3y2 + xy

3.

Subtract: -2x from -5y

4.

Subtract: x2 - 3z from 5x2 - y + z + 7

5.

From the sum of 3x2 - 5x + 2 and -5x2 - 3x + 9 subtract 4x2 - 3x + 9

6.

Subtract: 6x3 - 7x2 + 5x - 3 from 4 - 5x + 6x2 - 8x3

7.

Subtract the sum of 13x - 4y + 7z and -6z + 6x + 3y from the sum of 6x - 4y - 4z and 2x + 4y - 7

8.

Subtract: 10a2 - 9ab + 6b2 from 7ab - 2a2 - 2b2

9.

Fill in the blanks: We get ________ when x - y is subtracted from 2x - y.

10.

Fill in the blanks: The sum of ( -6x + y2) and (-4x - y2) is _______.

11.

Add: (m - n) and (m + n)

12.

Add: -5xy and 9xy

13.

Subtract: -4x from 3y

14.

Fill in the blanks: We get _______ when we subtract (x - 2x2) from 1

15.

Add: 3x 8y2x - 3x2y and -5x2y, 9x2y

16.

Fill in the blanks: When -4x2 is subtracted from 0 we get ______.

17.

What must be added to 12x3 - 4x2 + 3x + 7 to make the sum x3 + 2x2 - 3x + 2

18.

Add: 3x and 7x

19.

What should be subtracted from x2 - xy + y2 - x + y + 3 to obtain -x2 + 3y2 - 4xy + 1

CBSE Class 7 Maths Worksheet

Algebraic Expressions - Addition and subtraction of algebraic expressions

Answers

1.

-2x - 7y + 3z + 7

2.

x2 + 3xy - 6y2

3.

-5y + 2x

4.

6x2 - y + 4z + 7

5.

-6x2 - 6x + 2

6.

-4x3 + 12x2 - 10x + 7

7.

-11x + y - 5z - 7

8.

-12a2 - 8b2 + 16 ab

9.

x

10.

-10x

11.

2m

12.

4xy

13.

3y + 4x

14.

1 - x2 + 2x2

15.

17y2x - 8x2y

16.

4x2

17.

-11x3 + 6x2 - 6x - 5

18.

10x

19.

2x2 + 3xy - 2y2 - x + y + 2

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