Addition with Base 10 Blocks Worksheets | Maths Resources - Free Printable

To solve the problem, we need to interpret the base ten blocks shown in each row and determine the number they represent. Base ten blocks are a visual tool used to represent numbers in the decimal system, where:

- Large squares represent hundreds (100 each).
- Tall rectangles represent tens (10 each).
- Small yellow cubes represent ones (1 each).

Let's analyze each row step by step:

---

Row 1:

- Large squares (hundreds): There are 3 large squares.
- Each square represents 100, so \( 3 \times 100 = 300 \).
- Tall rectangles (tens): There are 4 tall rectangles.
- Each rectangle represents 10, so \( 4 \times 10 = 40 \).
- Small yellow cubes (ones): There are 5 small yellow cubes.
- Each cube represents 1, so \( 5 \times 1 = 5 \).

Adding these together:
\[
300 + 40 + 5 = 345
\]

So, the number represented in Row 1 is 345.

---

Row 2:

- Large squares (hundreds): There are 2 large squares.
- Each square represents 100, so \( 2 \times 100 = 200 \).
- Tall rectangles (tens): There are 0 tall rectangles.
- Each rectangle represents 10, so \( 0 \times 10 = 0 \).
- Small yellow cubes (ones): There are 6 small yellow cubes.
- Each cube represents 1, so \( 6 \times 1 = 6 \).

Adding these together:
\[
200 + 0 + 6 = 206
\]

So, the number represented in Row 2 is 206.

---

Row 3:

- Large squares (hundreds): There is 1 large square.
- Each square represents 100, so \( 1 \times 100 = 100 \).
- Tall rectangles (tens): There are 9 tall rectangles.
- Each rectangle represents 10, so \( 9 \times 10 = 90 \).
- Small yellow cubes (ones): There are 7 small yellow cubes.
- Each cube represents 1, so \( 7 \times 1 = 7 \).

Adding these together:
\[
100 + 90 + 7 = 197
\]

So, the number represented in Row 3 is 197.

---

Final Answer:

\[
\boxed{345, 206, 197}
\]