To solve this problem, we need to count the number of cubes used to build the crab. Let’s break it down step by step:
1.
Identify the structure: The crab is made up of red and black cubes. We need to count all the red cubes and the black cubes separately, then add them together.
2.
Count the red cubes:
- Start from the top left and move row by row.
- Row 1: 2 red cubes
- Row 2: 2 red cubes
- Row 3: 4 red cubes
- Row 4: 6 red cubes
- Row 5: 6 red cubes
- Row 6: 6 red cubes
- Row 7: 6 red cubes
- Row 8: 2 red cubes
Total red cubes = 2 + 2 + 4 + 6 + 6 + 6 + 6 + 2 = 34
3.
Count the black cubes:
- There are 2 black cubes in the middle of the crab.
4.
Add the red and black cubes:
- Total cubes = Red cubes + Black cubes
- Total cubes = 34 + 2 = 36
So, the total number of cubes used to build the crab is 36.
Final Answer: 36
Parent Tip: Review the logic above to help your child master the concept of unifix pattern worksheet.
