Which property of addition is used in ?
Complete the expression stating which property is being used: .
What equivalent expression to does this diagram show?
A couple walked from home 7 blocks to a movie theater. After the movie, they walked 10 blocks to an Italian restaurant. Write a mathematical sentence to show that the distance from the couple’s home to the Italian restaurant is the same as the return walk home, and then determine the real number property illustrated by the information.
A teacher used dominoes to teach addition to a group of children. When he picked the domino piece with 4 dots on one end and 6 dots on the other, some of the children read it as “4 plus 6 equals 10”, while others read it as “6 plus 4 equals 10”. State the real number property demonstrated by the children’s answers.