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One array, four facts
How does a multiplication fact give you division facts?
Today you'll discover
- how ringing rows shows division
- the four facts of one array
- how to divide with a times fact
Think first6 rows of 8 dots
6 × 8 = 48. Which division fact comes from the same array?
Decide first, then press Next. Find the three numbers every fact shares.
6 rows of 8 dots, labelled 6 rows and 8 in each row, then 6 × 8. Each row is ringed in turn: 6 groups of 8. Then four facts are listed: 6 × 8 = 48, 8 × 6 = 48, 48 ÷ 6 = 8, 48 ÷ 8 = 6. The last step shows 7 rows of 9.
See the whole ideathe big idea and the key word, in one place
The big idea
One array gives a fact family: two multiplications and two divisions.
The family of 6, 8 and 48
Four facts, the same three numbers.
6 × 8 = 488 × 6 = 4848 ÷ 6 = 848 ÷ 8 = 6
Easy to get wrongEvery fact in the family uses the same three numbers, and a division always starts from the biggest one.
Key word
- fact family
- the multiplication and division facts that use the same three numbers, like 6, 8 and 48
Ready to use it?
- Write the four facts of a fact family.
- Use a multiplication fact to divide.