Starting at 0 we can count up in 7s like this:
0 7 14 21 28 35 42 49 56 63 70 77 84 ...
We add 7 to the previous number to get the next.
These are the multiples of 7.
Example
When we count up in 7s, what comes after 56?
Answer
Start with a multiple of 7 that you know.
35 42 49 56 63
Example
When we count in 7s, what comes before 49?
Answer
List the multiples of 7.
We're looking for the number that comes before 49
7 14 21 28 35 42 49
Does that make sense?
Then let's get started!