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You start by dividing 420 by whichever numbers you know that it is divisible by.

420 is obviously divisible by 10 so you can start with 10 x 42.

Then, you factorise 10 and 10 = 2 x...

To solve this equation we want to find the value of one unknown, x. The solution will be x = ___. So first we need to put all the terms with x on one side of the =, and all the constants on the other side...

A third is 3 divisions of 1, for example cutting 1 muffin into thirds would give 3 pieces. So if you had 12 muffins and cut each muffin into 3 pieces you would have 36 pieces. Therefore there are 36 third...

If a price goes up from £15 to £20, the price has increased. The rate of increased is solved by finding the difference in the change which is £5 (£20-£15). The percentage is gotten by £5/£15 *100% and the...

Example- Biblioteca (library)

1.)a) Catedral     ----->  

b) Ayuntamiento   ----->

c)  Polideportivo -----> 

d) Centro comercial  --->...