Least Common Denominators

Add 5/7 + 2/5 + 1/15.

Fractions as Terminating and Repeating Decimals

What is the decimal notation for the fraction 1/4? How can you show that 1/4 = 25/100? How can you write 5/16 as a decimal? How would you write 1/9 as a decimal?

general maths problem sovling question.

Prove that the following numbers are not integers: 1/2+1/3+.....+1/n, and 1/3+1/5+.....+1/(2n+1) Can you generalise this ?

infinite geometric series.

The unending sum 1/2+1/4+1/8+1/16+...... where each term is a fixed multiple here(1/2) of the preceding term. THe sum of the first two terms is 3/4. Find the sum of the first three terms,four terms,five terms. How many terms must be added to exceed a sum of 99/100? Guess the sum of the geometric series.

reciprocals.

5/8, 3/16, 7/5, 9/10. Find the reciprocals of the given numbers and order them from smallest to largest. What do you observe about the order.