5.04 Multiply by 5
Are you ready?
Can you count up by fives? Let's practice now. Continue this pattern: $5,10,15,20$5,10,15,20...
What you may not have realized is that when you're counting up with this pattern, you are actually looking at multiples of five and saying the answers to your five times tables!
Learn
Similar to how we can use a doubling strategy for our $2,4$2,4 and $8$8 times tables, we can use a halving strategy for our $5$5 times tables because half of $10$10 groups is $5$5 groups. Watch this video to see how.
Apply
$5\times6$5×6
You can use your knowledge of the $10$10 times tables and halve the answers to work out your $5$5 times tables. Can you solve $10\times7$10×7? Can you find half of $70$70?
You can also reverse this strategy and double the answers to $5$5 times tables to work out the answers to the $10$10 times tables.