Maths – Friday 26th February (Zoom at 2pm)
Today’s lesson is about calculating the perimeter of different shapes.
Don’t forget that perimeter means the length of the whole outside of a shape.
It can be calculated by adding ALL lengths of sides of the shape together.
Watch the video to find out about and practise how to find the perimeter of different shapes.
At different points in the video, have a go at answering the questions using what you have learned from the video.
(You also have pictures of the worksheet in case the link doesn’t allow you to see all questions).
CHALLENGE – Try this if you need an extra challenge.
10 thoughts on “Maths – Friday 26th February (Zoom at 2pm)”
1. a. 10cm
3. a. 28cm
4. a. 31cm
5. a. 38cm
6. not really one of them you can but the other can only really be a guess
b. I don’t know
Check all of question 1, 3b, 4a and b, 5b and 6.
1) a) 14cm b) 16cm c) 16cm d) 22cm
2) a) 22cm b) 24cm
3) a) 28cm b) 34cm
4) a) 9cm 4cm b) 7cm 8cm
5) a) 25cm b) 33.4cm
6) Correct! One of the horizontal lines that are missing need to be labeled to work the perimiter out
7) a) 54cm, 64cm? B
Check 5a and 6.
1. 14cm, 16cm, 18cm, 22cm
2. 22cm, 24cm
3. 28, 27
4. 9, 4 and 4, 7
5. 38, 33.4
6. Yes, because there’s only enough for the left vertical line but not enough for the rest.
Check 1c, 3b, 4b and 6.
a) 14 cm
b) 15 cm
c) 16 cm
d) 20 cm
a) 22 cm
b) 24 cm
a) 28 cm
b) 34 cm
a) 9cm and 4cm
b) 7cm and 8 cm
a) 25 cm
b) 29.2 cm
Mo is incorrect
a) none they have the same perimeter
b) send by email. 72 cm
Check 1b and 1d, 5a and b, and 7a.
Math wotk sheet
a. 14 cm
d. 22 cm
a. Left 9cm and right 4cm
b. Bottoon 7cm, right 8cm
6. No – i can only work out one missing length
7. B has the largest perimeter
Well done, you have answered these well.
The only one to check is 5b – don’t forget that there are two sides which are 4cm in length (even though 4cm is only written once!).
Keep up the good work.