13 plus 7 equals 13 plus 7?

A change machine changes dollar bills into quarters and nickels If you receive 12 coins after inserting a dollar bill how many quarters did you receive? What is 5 multiplied by -1? How do turn a decimal into a percent? What was the doctrine of equal pay for substantially equal work? Which point on the number line is the best estimate of 0.58? What is the original list price if the discount is 35 and the discount rate is 10 percent? Calculate the average speed in km h of charlie who runs to the store a 4 kilometers away in 30 minutes? Is 0.20202020 a rational number? What is 2a equals b? How do you know there is no motion on a distance time-graph? What is your Grade for 10 out of 15 questions? What is the angle of elevation of the sun if a 93 feet tall casts a shadow of 26 feet? What is simpest form? What numbers are common multiples of both 6 and 9? What is 200 divided by 94? What is one and six hundredths as a mixed number? What is 622 divided by 9 with remainder? In the zoo there are 6 flamingos for every 8 ducks. If there are 20 ducks how many flamingos are there? Round 385.27 to the nearest tenth? What number is larger 8.16 or 8.016?