Being curious

There are 100 NRICH Mathematical resources connected to Being curious
What numbers can we make now?
problem
Favourite

What numbers can we make now?

Age
11 to 14
Challenge level
filled star filled star empty star

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

Three neighbours
problem
Favourite

Three neighbours

Age
7 to 14
Challenge level
filled star filled star empty star
Take three consecutive numbers and add them together. What do you notice?
Digit Addition
problem
Favourite

Digit addition

Age
5 to 11
Challenge level
filled star empty star empty star

Try out this number trick. What happens with different starting numbers? What do you notice?

The Number Jumbler
problem
Favourite

The Number Jumbler

Age
7 to 14
Challenge level
filled star empty star empty star

The Number Jumbler can always work out your chosen symbol. Can you work out how?

Fruity Totals
problem
Favourite

Fruity totals

Age
7 to 16
Challenge level
filled star empty star empty star

In this interactivity each fruit has a hidden value. Can you deduce what each one is worth?

Multiplication arithmagons
problem
Favourite

Multiplication arithmagons

Age
14 to 16
Challenge level
filled star filled star empty star

Can you find the values at the vertices when you know the values on the edges of these multiplication arithmagons?

Reversals
problem
Favourite

Reversals

Age
11 to 14
Challenge level
filled star filled star empty star
Where should you start, if you want to finish back where you started?
Unequal Averages
problem
Favourite

Unequal averages

Age
11 to 14
Challenge level
filled star filled star empty star
Play around with sets of five numbers and see what you can discover about different types of average...
Wipeout
problem
Favourite

Wipeout

Age
11 to 16
Challenge level
filled star filled star empty star
Can you do a little mathematical detective work to figure out which number has been wiped out?