Here is a page on dividing by 5 ‘in your head’. Divide each of the numbers in the circles by 5 and place the answers in the outside hexagons.
This is a useful exercise as it helps to show the relationship between division and multiplication. If the 5 times table is known these are quite simple; if the 5 x table is not known then they are very difficult!
It relies on the knowledge that if 5 x 7 = 35 then three other facts are known:
1. 7 x 5 = 35 and
2. 35 divided by 7 = 5
3. 35 divided by 5 = 7
thank youuuuuuuuuuuuuuuuu!!!!!!!!!!!!!!!
very helpful, i’m going to dubai in a few weeks and to convert the currency (so that i can know how much a price is in pounds) i have to divide by 5.4, so i use this, dividing by 5 instead, not as accurate but close enough!!! thanks!!!!!!!!
easiest way to divide by 5:
divide by 10
multiply by 2
take any number…say 90 for example:
divide by 10 = 9
9 times 2 = 18
voila! 18 is the answer to 90 / 5!