What it 1 fifth plus 1 fifth?

What is the difference between the independent variable and the experimental variable? What is 1.8 m in inches? How do you convert cl into liters? Does 0.73 has 3 significant digits? What is a real life object that is equal to a meter? What 2 numbers times to make 149? What is the probability of spinning a number greater than 5 on a spinner numbered 1 to 8 and tossing a tail on a coin? What does jubulious mean? What is two seventh of 21? What was the first civilization in the world to understand the advanced concept of zero? What is 852.1666667 rounded to the nearest hundredth? What is the least common multiple of 11 14 and 19? Is 67.20 the same as 67.2? What is a special proporty for a trapezium? How many kms in 1.8 miles? What is the sum of the first 15 positive even numbers? How many inches are in five and a one half feet? How many ft are in 17 yd? What are the function of trade unoin? Show me 5mm 0n a ruler?