Step by step
The question
Question: what comes next?
50, 45, 40, □.
50, 45, 40, □
1 Find the jumps
2 Find the rule
Every jump is the same: −5.
The rule is: take away 5 each time.
= Rule: take away 5 each time
3 Use the rule
The number before the box is 40.
40 − 5 = 35.
40 − 5 = 35
So the next number is 35.
= 50, 45, 40, 35
4 Check
We go one jump back.
35 + 5 is 40.
Yes!
It works.
35 + 5 = 40
Let's look back.
First: find the jumps.
Then: find the rule.
Then: use the rule.
Last: check.
Answer
= 50, 45, 40, 35