Or the book "Maths for mums and dads" is useful.
https://www.amazon.co.uk/Maths-Mums-Dads-Mike-Askew/dp/02240...
https://www.amazon.co.uk/More-Maths-Mums-Dads-Askew/dp/02240...
Or the book "Maths for mums and dads" is useful.
https://www.amazon.co.uk/Maths-Mums-Dads-Mike-Askew/dp/02240...
https://www.amazon.co.uk/More-Maths-Mums-Dads-Askew/dp/02240...