Activity 18 – KS2 Mental Maths Post date 22/11/2022 Activity 18 – KS2 Mental Maths Calculate half of 12 and double 7. Which is smaller? half of 12 double 7 If you are human, leave this field blank. Submit ← Activity 17 – KS2 Mental Maths → Activity 19 – KS2 Mental Maths