What is multiplacing?

If the area of a circle is given as 67cm squared find the diameter and then circumference of this circle? How many times does 8 go into 341? Which is bigger 8.4 or 8.104? What is the other word for outer part? What is 20.1 divide 3? What is 4x4x4x4x4x4x4? How do you simplify 66 over 12? What is the lcm of 250 and 125? What is the exponent of 1 1 1 1 1 1 1 1 1? What is the sine of 60? How many coins are worth 1.45 if the coins are only in dimes and nickels? What is larger 8.34 or 8.5? 80 divided by 25 equals? What is 14 over 21 in lowest terms? Did new era changed the fifty nine fifty hat? What is 19129 divided by 37? Write 4 related facts using the numbers 6 7 and 42? Two numbers whose sum is zero? What is 102 divided by 2.54? You have 2 coins that total 55p one of them is not a 5pence coin what are the 2 coins?