Finding the perimeter of polygons

12 questions

1. Perimeter is the distance ___ a 2D shape
2. Replacing a letter in an expression with a value is known as ______
3. If a = 10 and b = 7, what is the value of the expression 2b + 2a?
4. Substitute the value y = 2 into the expression 3y + 5 and evaluate the result
5. Izzy wants to add these values: 0.24, 0.5 and 17.3 together using column addition. Select the correct layout.
6. Evaluate 18.41 + 16.7
7. Perimeter is the distance around a 2D shape. It can be calculated by ___ all of the edges together.
8. True or false? Number bonds can be used to calculate the perimeter more efficiently.
9. Which of these formulas could **not** be used to calculate the perimeter (P) of this square?
10. Complete the formula for the perimeter of this trapezium. P = ___
11. You can write a ___ to calculate the perimeter in an efficient way.
12. What is the mathematical name for the polygon whose perimeter (P) can be calculated using the formula P = t + r + 2w + y?

License: OGL