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Home > MC1 > Chapter 1 > Lesson 1.2.3 > Problem 1-79

1-79.

For each number of pennies below, arrange them first into a complete rectangular array and then into a different rectangular array that has a remainder of one (so there is one extra penny). Write an expression for each arrangement.

  1. pennies

    Try dividing by one or two to get your rectangle.

    To have a remainder of one, you want your rectangular array to be one less than . That means you need to use the factors of 9 to get a rectangle for it.

  2. pennies

    This one is very similar to the previous problem. What numbers divide into 15 evenly?

  3. pennies

    This problem is very similar to the previous two. What numbers divide into 25 evenly?