Divisibility

Imagine we have four bags containing numbers from a sequence. What numbers can we make now?

Sequences of multiples keep cropping up...

This challenge encourages you to explore dividing a three-digit number by a single-digit number.

Imagine we have four bags containing a large number of 1s, 4s, 7s and 10s. What numbers can we make?

Can you order the digits from 1-3 to make a number which is divisible by 3 so when the last digit is removed it becomes a 2-figure number divisible by 2, and so on?

From only the page numbers on one sheet of newspaper, can you work out how many sheets there are altogether?

Each time a class lines up in different sized groups, a different number of people are left over. How large can the class be?

When Charlie asked his grandmother how old she is, he didn't get a straightforward reply! Can you work out how old she is?