Adding tens and ones

We are finding out that there are other ways to add numbers together than counting on.  This is important for bigger numbers, so that we can add numbers without losing track or taking too long to count.  Last term we used some base ten blocks or groups of ice block sticks (tens and ones) to make numbers, then we started adding two-digit numbers together by making both numbers, then adding the tens and the ones to get the answer.  This week we were using whiteboards and drawing our own tens and ones to add them.  After a while we found that we could add the tens and ones in the numbers without drawing the tens and ones.  We will practise this more throughout the term.