To find the volume of each shape, we just need to count how many small cubes are used to build it. Since each small cube has a volume of $1 \text{ cm}^3$, the total number of cubes equals the total volume in $\text{cm}^3$.
Here is the step-by-step count for each shape:
Row 1:
1.
First shape: This is a tall tower. Counting from bottom to top, there are
4 cubes.
2.
Second shape: There are 2 cubes on the bottom and 1 cube stacked on the left side. $2 + 1 =$
3 cubes.
3.
Third shape: This is a large block. The front layer has 4 cubes ($2 \times 2$), and there is another identical layer behind it. $4 + 4 =$
8 cubes.
Row 2:
4.
Fourth shape: There are 2 cubes on the bottom and 1 cube stacked on the right side. $2 + 1 =$
3 cubes.
5.
Fifth shape: This looks like an 'L'. There are 2 cubes on the bottom and 2 cubes stacked vertically on the left. $2 + 2 =$
4 cubes.
6.
Sixth shape: The bottom layer has 3 cubes (one in front, two in the back row). There is 1 cube stacked on top of the back-right cube. $3 + 1 =$
4 cubes.
Row 3:
7.
Seventh shape: This is a flat rectangle. It is 2 cubes high and 3 cubes wide. $2 \times 3 =$
6 cubes.
8.
Eighth shape: This is a long flat line. Counting them across, there are
5 cubes.
9.
Ninth shape: The bottom layer has 3 cubes in a row. There is 1 cube sitting on top of the middle one. $3 + 1 =$
4 cubes.
Final Answer:
Row 1: 4, 3, 8
Row 2: 3, 4, 4
Row 3: 6, 5, 4
Parent Tip: Review the logic above to help your child master the concept of volume cubes worksheet.
