Solids, flat shapes and position · Usually met around P1
Halves and quarters
First check every part is the same size.
How to do it
Method
First check every part is the same size
4 equal parts: 1 shaded is a quarter, 2 shaded is a half
Another way
Lay them on top
Two parts that match exactly on top of each other are halves
In full
Sharing equally means every part is the same size. A shape cut into 2 equal parts: each is a half. Into 4 equal parts: each is a quarter, and 2 quarters make a half. If the parts aren't the same size, they aren't halves or quarters. Same size need not mean same shape: a square cut into 2 small squares and 2 strips is still 4 equal parts if each part is the same size. Or cut the parts out and lay them on top of each other to compare; to share things, hand them out one each in turn.
Worked examples
Have a go first, then open each one for the answer and the working.
Example 1
How many equal parts is this shape cut into?
Show the answer and working
Answer: 2 parts
The parts are the same size; count them: 2.
Example 2
How much of the whole shape is shaded?
- A. A half
- B. A third
- C. All of it
- D. A quarter
Choose the right answer
Show the answer and working
Answer: D. A quarter
4 equal parts, 1 shaded: 1 of 2 or 2 of 4 is a half; 1 of 4 is a quarter.
Example 3
28 sweets shared into two equal parts: each part is a half, □ sweets. Into four equal parts: each is a quarter, □ sweets.
Fill in each box
Show the answer and working
Answer: 14，7
Hand them out one at a time to 2 people: 14 each. To 4 people: 7 each (half of a half).
Practise it in the game →Solids, flat shapes and position · Free to start, unlimited questions, no download