Home > CC1 > Chapter Ch4 > Lesson 4.1.2 > Problem 4-17
4-17.
A team of students worked on problem 4-12. The team’s work is shown below. Unfortunately, the expressions, descriptions, and diagrams got mixed up! Match the counting method, word description, and diagram that describe the same strategy. Homework Help ✎
Counting Methods | Word Descriptions | Diagrams |
a. | 1. Start in one corner and count 9 four times around the picture frame. | A. |
b. | 2. Take a side length of 10 four times and take away the four corners. | B. |
c. | 3. Take the entire 100's grid and subtract the inside part of the picture frame. | C. |
d. | 4. Take the top length, then add the two vertical sides and add the bottom. | D. |