Imagine we have four bags containing a large number of 1s, 4s, 7s and 10s. What numbers can we make?
Can you use your powers of logic and deduction to work out the missing information in these situations?
These eleven shapes each stand for a different number. Can you use the multiplication sums to work out what they are?
This task combines spatial awareness with addition and multiplication.
This challenge combines addition, multiplication, perseverance and even proof.
A monkey with peaches, keeps a fraction of them each day, gives the rest away, and then eats one. How long can his peaches last?
Which armies can be arranged in hollow square fighting formations?
This article outlines how strategy games can help children develop logical thinking, using examples from the NRICH website.
