Kesia knows that 1/4 = 0.25. explain how she could use this fact to determine the decimal equivalent of 5/8.

Well if you split 1/4 in half then that will give 1/8. You must also split 0.25 in half which gives 0.125

Now you can multiply that by 5 which gives 5/8. But also the fraction

Now we know that 5/8 = 0.625