Step by step
The question
Question: what comes next?
0, 5, 10, 15, □.
0, 5, 10, 15, □
1 Find the jumps
2 Find the rule
Every jump is the same: +5.
The rule is: add 5 each time.
= Rule: add 5 each time
3 Use the rule
The number before the box is 15.
15 + 5 = 20.
15 + 5 = 20
So the next number is 20.
= 0, 5, 10, 15, 20
4 Check
We go one jump back.
20 − 5 is 15.
Yes!
It works.
20 − 5 = 15
Let's look back.
First: find the jumps.
Then: find the rule.
Then: use the rule.
Last: check.
Answer
= 0, 5, 10, 15, 20