How Many Are Hidden? Cube Trains
The number of cubes in both pictures is the same.
How many cubes are hidden behind the cloud? How do you know?
How can you finish the equation to make it true?
What do you notice about how the blue number changed? What about the red number?
- Now there are more than 28 cubes. You get to decide how many!
How many could be hidden behind each cloud? How do you know?
- Complete the equation to make it true.
What do you notice about how the numbers changed?