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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:  

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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:

 

CORRECT ANSWER
2x - 2
  • Question 2

Work out the value of A in these Algebra bricks:

 

CORRECT ANSWER
4x - 1
  • Question 3

Work out the value of A in these Algebra bricks:

 

CORRECT ANSWER
x + 5
  • Question 4

Work out the value of A in these Algebra bricks:

 

CORRECT ANSWER
x + 13
  • Question 5

Work out the value of A in these Algebra bricks:

 

CORRECT ANSWER
4x + 8
  • Question 6

Work out the value of A in these Algebra bricks:

 

CORRECT ANSWER
8x + 8
  • Question 7

Work out the value of A in these Algebra bricks:

 

CORRECT ANSWER
8x + 6
  • Question 8

Work out the value of A in these Algebra bricks:

 

CORRECT ANSWER
8x - 2
  • Question 9

Work out the value of A in these Algebra bricks:

 

CORRECT ANSWER
6x - 2
  • Question 10

Work out the value of A in these Algebra bricks:

 

CORRECT ANSWER
4x
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