DS Year 2 Maths - Should I be worried?

[Peanuts33]

DS is 7 and in year 2. He brought home a peice of handwritten maths homework the other day which they had being doing in class. It had 32 subtraction sums on it. EG. 69 - 23, 46 - 21 etc. Out of 32 he got half wrong so his teacher has sent them home to do again.

What is expected of year 2 when it comes to substraction? Will he get a really low sat score?

I always read these sort of posts because my DD is in Year 2. Hopefully one of the lovely teachers will come along to post. I'm not sure if I gave this to my year 2 she would get it straight away because she doesn't always remember how to apply things. Once I helped her with 1 I'd hope she could do the others because she can count forwards and back most of the time and can partition. Just because he has been give extra practise on this exercise doesn't mean to say he needs extra practise in all areas of his maths. SATs papers didn't have that many subtraction questions in them if I recall correctly. Great his teacher is asking him to look at something he can improve on.

p.s I meant to say I think my DD is average 2b (might get 2a) from what her teacher says. (I know she does better in school than anything random I ask her to do)

Is their any indication of why he was asked to do it at home? It could have been that he was messing about and not concentrating, or that he didn't understand, or that he did know how to do them but wasn't able to do them accurately in a limited time. If he needed more practice of method/understanding I would have expected some instructions with the work on method(s) he should use, how you could help etc.
FWIW, I don't think you can possibly extrapolate a likely SATs result from a single piece of work, especially if you don't know the reason he got half wrong!

Thanks for the replies. When I explained how to do the first one with him, he did the rest on his own fairly easily. This makes me wonder if things are not being explained to him in class.

I have just googled this and at the end of year 2 they are expected to be able to subtract two digit multiples of tens, e.g. 43 - 20, 23 - 10, 65 - 30. He can do these easily so it has put my mind at rest a bit. Will also have a chat with his teacher on Monday.

I'm re-reading my posts and I'm sorry I'm doing that whole comparison thing. I was trying to be helpful by saying DD is pretty average and they expect her to do these things. I know number bonds are something that was pointed out they should know and we are working on those with her as this is one of her areas of weakness. Wish I had the checklist for year 2 so I didn't just waffle my experience. Sorry

Didn't see your new post. That sounds good. There could have been 101 reasons that day why he didn't get more correct and it might not all have been about him. No panic needed :)

Don't want to comment on this piece of work specifically but I know that my Y2 DS sometimes struggles with maths worksheets first time round, but seems to get them at a later date. Either it's re-explained in class, or it takes a while to settle in his brain!! Sounds like similar has happened with your DS.

Missing the odd subtraction won't necessarily get a poor score on the actual SATs test paper as there are a wide variety of questions. But it is an important skill and its is part of the general assessments made by the teacher (See APP) I do sometimes catch a parent (if they are the sort who have expressed that they would like to help at home - there are some who don't want to) and say "X really struggled on .... today in maths. We've been over it again and this is how you work it out. Is it possible for you to do some more practise at home?" If they say yes I send the worksheet or something similar home.
And, yes this is the level I would expect most Y2s to be working at, the examples you have given don't cross the tens boundaries and that is what I'm working at with the middle ability group in my class when we get back after half term.