Extended Just Four Numbers
After working through Just Four Numbers you can move onto trying to get answers up to $60$ using multiplication as well as addition and subtraction.
Taking the example we started in Just Four Numbers we could now have,
$(3 \times 10) + 1 = 31$
$10 \times (7 - 3 ) -4 = 39$
So you could carry on with these four numbers and try to getas many of the answers from $1$ to $60$.
Or, of course choose you own four numbers ( remember they're to be from $1$ to $10$ and no duplications and you can only use a number once in each calculation you invent.