Right, I asked you to add up in long hand the miles we have flown to get to New Zealand. Let me show you how I did it, you check your figures and hopefully we will end up with the same answer.
The secret is to get the numbers you want to add nicely set out so there is no confusion about what position they are in - units, tens, hundreds, etc. Draw a line underneath them, and start with the units column. 8, 6 and 3 add up to 17. Write down the '7' and put the '1' as a carry in the next column, the tens column. Okay, next the tens. 5, 8 and 1 gives 14, remember the carry of 1, so we have 15. Jot down the '5' and the carry of 1 into the hundreds column. You're getting the hang of this now. This technique allows you to add numbers with oodles and oodles of digits (as long as you have a piece of paper big enough) so it is worth knowing about. Now the hundreds column. 3, 3, and 4 is 10, plus the carry of 1 and you have 11. Write down the '1' and the carry '1'. Lastly the thousands. 5, 2 and 6 is 13, plus the carry is 14. There are no more columns to add so we write down the number 14.
We can now see the full result:
14,157 miles. Wow! To go to the opposite side of the world - the seasons are different - the UK is in the grip of winter, New Zealand in the middle of summer; even the stars at night are different and the Moon is upside-down! Home seems a long way away.
The second part of the question was really to test your *understanding* of world geography. If you have messing around with your Google Earth I suspect that you would have a good idea what the answer should be. If it takes 14,157 miles to get right round the world, how far is it *all* the way round (the 'circumference').
to be continued.....