Maths Tuesday 5th May

LO – Volume of a cuboid problems

Yesterday, you may have noticed in the spicy section some volume problems. One question asked for missing

measurements in a table, the other was to work out the volume of a compound shape (remember those from last

week?).

Today we are going to try more volume problems like those.

Here are some method links to help you work out the volume of a compound shape –

https://www.youtube.com/watch?v=z1Pm4dR0Vig

https://www.youtube.com/watch?v=C8WH68qQSyE

HINT - You will find it useful to sketch the compound shapes to help you calculate the volume. But remember, just

sketch them, don’t try and draw them actual size.

Take care - The work is spread over a few pages, so you’ll be doing a lot of scrolling!

Good luck!

Mild

Count the cubes to work out the volume

Work out the total volume of these shapes

Medium

Find the total volume of these shapes

Spicy

.

Work out the total volume of these shapes

Careful – this one has a hole in the centre!

Answers

Mild

a) cuboid A: 6 × 4 × 3 = 72cm^

b) cuboid B: 2 × 8 × 4 = 64cm^

c) cuboid C: 9 × 2 × 3 = 54cm^

Counting the cubes

a) 11cm^3

b) 30cm^3

c) 14cm^3

d) 44cm^3

Medium

Cuboid A: 12 × 2 × 3 = 72cm^

Cuboid B: 5 × 4 × 6 = 120cm^

Spicy

Cuboid C: 8 × 7 × 2 =112cm^