Adding Up Several Numbers

1 + 1 + 1 + 1 + 1 + 1 =

1 + 2 + 3 + 4 + 5 + 6 =

2 + 2 + 4 + 4 + 6 + 6 =

3 + 1 + 4 + 3 + 1 + 4 =

4 + 6 + 8 + 2 + 9 + 1 + 5 + 5 =

9 + 1 + 3 + 7 + 6 + 4 + 2 + 8 + 5 + 5 =

3 + 6 + 1 + 5 + 2 + 6 + 7 + 8 =

What is the perimeter of this shape?

• 26

• 26 cm

• 25 cm

• 28 cm

What is the perimeter of this shape? Put ‘cm’ in your answer.

Which of the images does NOT show a perimeter of 16?

• A

• B

• C

• D