Multiplying · Grade 3
In Grade 3 you learn: multiplying within 100 and multiplying by multiples of 10.
Multiplying puts equal groups together: 4 groups of 3 is 12. To multiply a 2-digit number, split it into tens and ones and multiply each part.
Key facts
- Multiplying adds equal groups: 4 groups of 3 is 4 × 3 = 12.
- You can multiply in any order: 3 × 4 = 4 × 3.
- To multiply by a multiple of 10, use a times table fact, then make it 10 times bigger: 6 × 4 = 24, so 6 × 40 = 240.
Worked examples
Example 1
There are 4 plates with 3 cakes on each plate. How many cakes are there?
Answer: 12
Example 2
A box of chocolates has 3 rows with 5 chocolates in each row. How many chocolates are in the box?
Answer: 15
Example 3
A tricycle has 3 wheels. How many wheels do 6 tricycles have?
Answer: 18
Example 4
A spider has 8 legs. How many legs do 7 spiders have?
Answer: 56
Example 5
Work out 6 × 40.
Answer: 240