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.