1.   Doing the sums Knowing the facts is the first priority.

2.   I did my sums and I knew I could pay him.

3.   The astonished researchers worked out the number of such peepholes in the sky, and did the sums.

4.   We can accumulate the figures and we can all do our sums.

5.   You will have to do your sums.

6.   Oxford United have done their sums.

7.   But the club have done their sums.

8.   He was frantically doing sums in his head.

9.   Mum can do mathematical sums.

10.   Kaley did you do any sums today?