Doubles & Halves
Double and halve numbers — a powerful mental maths shortcut.
What your child learns
- Doubling means adding a number to itself
- Halving means splitting into two equal parts
- Use near-doubles: 6 + 7 is double 6 plus 1
Example
Double 35 = 70, so half of 70 = 35.
Practice questions
A taste of the questions in BloomTracks – the app makes fresh ones every time and adjusts the level as your child answers.
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Question 1 · Level 1
What is double 4?
+- 8
- 9
- 6
- 7
Show the answer
Answer: 8
4 + 4 = 8
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Question 2 · Level 3
What is half of 22?
Show the answer
Answer: 11
11 + 11 = 22, so half of 22 is 11.
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Question 3 · Level 5
What is half of 456?
Show the answer
Answer: 228
228 + 228 = 456, so half of 456 is 228.
Try it at home
Play 'doubles ping-pong': you say a number, your child doubles it.
Key takeaway
Doubling and halving undo each other.
Practise doubles & halves with Bloomie
Bloomie reads every question aloud, listens to spoken answers and adapts the difficulty one question at a time.