Wednesday 10th February 2021

Complete the quick maths starter.

• Please work on Paper and show all your working out.
• Time yourself to see quickly and accurately you can get an answer.
• Mark your work by opening up the document below

DO NOT SPEND MORE THAN 10 MINUTES ON THIS ACTIVITY

09.01.21

WALT find the area of triangles

Recap

• The area of a triangle is always half the area of a rectangle that has the same height and width. 

• This is because a triangle can always fit into a rectangle twice, no matter the shape of the triangle. 

• Formula for working out the area of a triangle is:

(base x height) ÷ 2 

You can also write the formula as: 

½ x base x height 

They both give you the exact same answer since multiplying by a half is the same as dividing by 2.

Challenges 

• Today I would like everyone to watch the video and follow the instructions and activities. The video will take you through the activities step by step. 

• Pause the video so you can give yourself enough time to work out each question.

• You will need to worksheet with you when you watch the video because you will answer some of the questions as you go.

• Try to complete as many questions as you can. The questions get harder as you progress through the sheet. See how far you can go!

IMPORTANT

If you find this formula difficult,  ½ x base x height 

Then try it this way round (base x height) ÷ 2 

Some people find it easier!