3.01 Counting back
Lesson
Are you ready?
Do you remember how to count forward from any number?
Complete the pattern by adding $10$10 each time.
$30$30, $40$40, $50$50, $\editable{}$, $\editable{}$, $\editable{}$
Vocabulary:
-
Another word that we can use to describe the ones place is 'units'.
Learn
We can also count backwards from any number. Let's see how we can count backwards by $1$1, $2$2, $5$5 or $10$10.
Apply
Find the next number in the pattern:
$33$33, $28$28, $23$23, $18$18, $13$13, $8$8, $\editable{}$
Remember!
When we count backwards, our number gets smaller. We can use a number line to help us, by jumping left. Look at how we can count backwards by $2$2 below.
