Maths playground · 23/50 · Ages 8–10
Equal groups of seeds
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Owl plants three rows with four seeds in each row. Multiplication is a quick way to count equal groups. Draw the rows before finding the total.
What you will discover
- Multiplication can represent repeated equal groups.
- An array shows groups as rows and columns.
English vocabulary
- group
- nhóm
- multiply
- nhân
Let’s play
3 rows × 4 seeds = how many seeds?
See the explanation
4 + 4 + 4 = 12, so 3 × 4 = 12.
Practise touch typing
Place your hands on F and J and type this sentence using ten fingers.
Three groups of four make twelve.
Two little quiz questions
1. Which addition matches three groups of four?
- 3 + 4
- 4 + 4 + 4
- 3 + 3
Answer and explanation
4 + 4 + 4. There are three groups, each containing four.
2. A 4 by 3 array also contains…
- 7
- 12
- 16
Answer and explanation
12. Changing rows and columns keeps the total twelve.