Grade
2

How Many Are Hidden? Beetles

https://drive.google.com/file/d/1O1DfAsoxpOjWWSsRC9OMnIR_Zei974U0/view?usp=sharing

The number of beetles in both pictures is the same. How many are hidden behind the plant? How do you know? How can you finish the equation to make it true?

The picture on the left shows 9 blue beetles and 4 red beetles. The picture on the right shows 10 blue beetles and a plant with a red question mark. The equation is blue 9 + red 4 = blue 10 + red blank.

Look at the numbers. What do you notice about how they changed?

Blue 9 + red 4 = blue 10 + red blank.
  • Now there are more than 13 beetles. How many might be hidden behind each plant? How do you know?
  • Complete the equation to make it true. What do you notice about how the numbers changed?
The picture on the left shows 12 red beetles and a plant with a blue question mark. The picture on the right shows 10 red beetles and a plant with a blue question mark. The equation is blue blank + red 12 = blue blank + red 10.