Year 4 · Multiplication and division B
Find pairs of numbers that multiply to make a total
Definition
Multiplication is repeated addition of equal groups: 3 × 4 means three groups of four. Arrays, times tables and scaling problems all build on this one idea.
Why Do I Have to Learn This?
Multiplying is a fast way of adding the same number again and again. It helps with times tables, sharing fairly and working out costs quickly.
Key Rules:
- 1. Multiplication can be done in any order: 3 × 4 = 4 × 3 (an array shows why).
- 2. Multiplying by 10 shifts every digit one place to the left.
- 3. Knowing times-tables by heart makes every written method faster.
Remember:
- •Multiplying does not always "make bigger" once fractions and decimals appear.
- •Picture an array (rows × columns) when you forget a fact.
- •Break a hard fact into easy ones: 7 × 8 is 7 × 4 doubled.
Array
Objects set out in rows and columns, used to show multiplication.
3 rows of 4 dots make an array showing 3 × 4 = 12.
Animated Example:
Free Find pairs of numbers that multiply to make a total Worksheet
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Before this: Multiplication and division A (Year 3) · Next: Multiplication and division A (Year 5)
Let’s Practise the Concept
Step 1 of 3
Put them in order
Tap the numbers from smallest to largest.
In order so far: nothing yet