Hello,
I moved in with my partner and his 9 yr old about 4 months ago and I'm worried that his 9 year old seems to struggle with seemingly basic mathematics. The other day he asked me for, "a 50p, a 20p, and a 20p" and had no idea that this added up to 90p; and was baffled when his dad explained that with the 10p already in his hand that made £1. Should he know this? His dad another time asked what 5+2 was and he guessed 52. I'm really worried that we should be doing more to help him if this isn't normal? Can anybody help or offer any suggestions? Thanks.