Review constructing a whole when given a part and the number of parts | Maths

Starter quiz

What is the name of this shape?

'hexagon' ✓
Which shape is the odd one out because it is not the same polygon as the others?

A

B

C

D ✓
Look at the whole shapes. Which shapes are made from four equal-sized parts?

A

B ✓

C ✓

D
Complete the bar model by calculating the whole.

'18' ✓
Match the equation to its product.

4 × 5 =

⇔

20 ✓

3 × 4 =

⇔

12 ✓

2 × 5 =

⇔

10 ✓

3 × 5 =

⇔

15 ✓

3 × 7 =

⇔

21 ✓
Look at these sets of marbles. Out of all the sets, in which one is the green marble the greatest part of the whole?

Set A

Set B

Set C

Set D ✓

Exit quiz

Look at these shapes and their parts. Which shape is the odd one out, thinking about the parts and wholes?

A

B ✓

C
Look at the given part of a shape. This is one part of a whole made out of three equal parts. Which is a correct shape?

A ✓

B

C
Look at the given line segment - this is one part of four equal parts. Which is the correct whole line?

A

B

C ✓

D
Izzy has a length of string that she cuts into four equal parts. The image shows one of her parts. How long was her string to start with?

A

B

C ✓
A grocer has divided his apples into three equal groups ready to pack them into boxes. Here is one group. How many apples did the grocer have?

'15' ✓
Strip A is made up of 2 equal parts. Strip B is made up of 3 equal parts. Which strip is the longest?

'B' ✓

Worksheet

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Lesson Details

Key learning points

When constructing a whole, you can start with the part.
To construct a whole, you need to know how many parts make it up and whether those parts are equal.
The whole can be one shape or a group of objects
Different shaped wholes can be constructed using the same shaped equal parts.

Common misconception

Children may not include the original part when constructing a whole. E.g. if the given part is one of four equal parts of the whole, they may construct five parts together in total.

How many parts does your whole have?

Keywords

Whole - The whole is all the parts or everything, the total amount.
Part - A part is some, but not all, of the whole.
Construct - Constructing something involves making something by joining parts together.