Here is a story: Lin bought 4 bags of apples. Each bag had the same number of apples. After eating 1 apple from each bag, she had 28 apples left.
1. Which diagram best represents the
A
28
story? Explain why the diagram
represents it.
X + 1 x + 1 x + 1] x + 1
B
28
2. What part of the story does x
represent?
х
Х
х
Х
C
X-1
X-1 X- 1 x - 1
28
3. Describe how you would find the
unknown amount in the story.