Algebra Bricks (1)

In this worksheet, students add and subtract expressions to find the missing Algebra bricks.

Key stage:  KS 3

Curriculum topic:   Algebra

Curriculum subtopic:   Understand Expressions, Equations, Inequalities, Terms and Factors

Difficulty level:

QUESTION 1 of 10

Look at these number bricks.

You'll notice that 5 + 7  = 12    and that A must equal 10, so that 5 + 10 = 15

The same "rule" applies with Algebra bricks.

So here x + 3 + x - 4 = 2x - 1

In this worksheet, the expression on any brick can we worked out by adding the expressions on the two bricks below it.

Work out the value of A in these Algebra bricks:

x - 2

2x - 8

2x - 2

Work out the value of A in these Algebra bricks:

2x - 1

2x - 9

4x - 1

Work out the value of A in these Algebra bricks:

x + 13

x + 5

3x + 13

Work out the value of A in these Algebra bricks:

x + 13

x + 5

3x + 5

Work out the value of A in these Algebra bricks:

4x + 13

4x + 8

3x + 5

Work out the value of A in these Algebra bricks:

8x + 13

4x + 8

8x + 8

Work out the value of A in these Algebra bricks:

8x + 13

8x + 8

8x + 6

Work out the value of A in these Algebra bricks:

8x - 2

8x + 8

8x + 7

Work out the value of A in these Algebra bricks:

8x - 2

6x - 2

6x + 7

Work out the value of A in these Algebra bricks:

4x

6x - 2

4x + 7

• Question 1

Work out the value of A in these Algebra bricks:

2x - 2
• Question 2

Work out the value of A in these Algebra bricks:

4x - 1
• Question 3

Work out the value of A in these Algebra bricks:

x + 5
• Question 4

Work out the value of A in these Algebra bricks:

x + 13
• Question 5

Work out the value of A in these Algebra bricks:

4x + 8
• Question 6

Work out the value of A in these Algebra bricks:

8x + 8
• Question 7

Work out the value of A in these Algebra bricks:

8x + 6
• Question 8

Work out the value of A in these Algebra bricks:

8x - 2
• Question 9

Work out the value of A in these Algebra bricks:

6x - 2
• Question 10

Work out the value of A in these Algebra bricks:

4x
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