Printable primary math worksheet for math grades 1 to 6 based on ... - Free Printable

To solve the problem of completing the patterns, we need to identify the repeating sequence in each row and fill in the missing shapes accordingly. Let's go through each row step by step:

---

Row 1:

```
_ △ _ △ △ _ △ △ _ △
```
- The pattern alternates between a blank (`_`) and a triangle (`△`).
- Filling in the blanks:
- First blank: `_ △ _ △ △ _ △ △ _ △`
- The first blank should be `△`.
- Second blank: `_ △ _ △ △ _ △ △ _ △`
- The second blank should be `△`.
- Third blank: `_ △ _ △ △ _ △ △ _ △`
- The third blank should be `△`.

Completed Row 1:
```
△ △ △ △ △ △ △ △ △ △
```

---

Row 2:

```
△ _ _ _ △ △ △ △ △ △
```
- The pattern repeats every 5 shapes: `△ △ △ △ △`.
- Filling in the blanks:
- First blank: `△ _ _ _ △ △ △ △ △ △`
- The first blank should be `△`.
- Second blank: `△ _ _ _ △ △ △ △ △ △`
- The second blank should be `△`.
- Third blank: `△ _ _ _ △ △ △ △ △ △`
- The third blank should be `△`.

Completed Row 2:
```
△ △ △ △ △ △ △ △ △ △
```

---

Row 3:

```
☆ _ _ _ ☆ ☆ ☆ △ ☆
```
- The pattern alternates between a star (`☆`) and a triangle (`△`).
- Filling in the blanks:
- First blank: `☆ _ _ _ ☆ ☆ ☆ △ ☆`
- The first blank should be `△`.
- Second blank: `☆ _ _ _ ☆ ☆ ☆ △ ☆`
- The second blank should be `△`.
- Third blank: `☆ _ _ _ ☆ ☆ ☆ △ ☆`
- The third blank should be `△`.

Completed Row 3:
```
☆ △ △ △ ☆ ☆ ☆ △ ☆
```

---

Row 4:

```
□ ○ ○ □ □ _ _ _
```
- The pattern alternates between a square (`□`) and an octagon (`○`).
- Filling in the blanks:
- First blank: `□ ○ ○ □ □ _ _ _`
- The first blank should be `○`.
- Second blank: `□ ○ ○ □ □ _ _ _`
- The second blank should be `○`.
- Third blank: `□ ○ ○ □ □ _ _ _`
- The third blank should be `□`.

Completed Row 4:
```
□ ○ ○ □ □ ○ ○ □
```

---

Row 5:

```
□ _ _ _ □ □ △ △ △ △
```
- The pattern alternates between a square (`□`) and a triangle (`△`).
- Filling in the blanks:
- First blank: `□ _ _ _ □ □ △ △ △ △`
- The first blank should be `△`.
- Second blank: `□ _ _ _ □ □ △ △ △ △`
- The second blank should be `△`.
- Third blank: `□ _ _ _ □ □ △ △ △ △`
- The third blank should be `△`.

Completed Row 5:
```
□ △ △ △ □ □ △ △ △ △
```

---

Row 6:

```
□ △ △ △ _ _ △ _ □
```
- The pattern alternates between a square (`□`) and a triangle (`△`).
- Filling in the blanks:
- First blank: `□ △ △ △ _ _ △ _ □`
- The first blank should be `△`.
- Second blank: `□ △ △ △ _ _ △ _ □`
- The second blank should be `△`.
- Third blank: `□ △ △ △ _ _ △ _ □`
- The third blank should be `△`.

Completed Row 6:
```
□ △ △ △ △ △ △ △ □
```

---

Row 7:

```
○ ○ _ _ _ ○ ○ ○ ○ ○
```
- The pattern alternates between a circle (`○`) and an octagon (`○`).
- Filling in the blanks:
- First blank: `○ ○ _ _ _ ○ ○ ○ ○ ○`
- The first blank should be `○`.
- Second blank: `○ ○ _ _ _ ○ ○ ○ ○ ○`
- The second blank should be `○`.
- Third blank: `○ ○ _ _ _ ○ ○ ○ ○ ○`
- The third blank should be `○`.

Completed Row 7:
```
○ ○ ○ ○ ○ ○ ○ ○ ○ ○
```

---

Row 8:

```
□ _ _ _ □ □ ○ □ □ □
```
- The pattern alternates between a square (`□`) and a circle (`○`).
- Filling in the blanks:
- First blank: `□ _ _ _ □ □ ○ □ □ □`
- The first blank should be `○`.
- Second blank: `□ _ _ _ □ □ ○ □ □ □`
- The second blank should be `○`.
- Third blank: `□ _ _ _ □ □ ○ □ □ □`
- The third blank should be `○`.

Completed Row 8:
```
□ ○ ○ ○ □ □ ○ □ □ □
```

---

Final Answer:

```
Row 1: △ △ △ △ △ △ △ △ △ △
Row 2: △ △ △ △ △ △ △ △ △ △
Row 3: ☆ △ △ △ ☆ ☆ ☆ △ ☆
Row 4: □ ○ ○ □ □ ○ ○ □
Row 5: □ △ △ △ □ □ △ △ △ △
Row 6: □ △ △ △ △ △ △ △ □
Row 7: ○ ○ ○ ○ ○ ○ ○ ○ ○ ○
Row 8: □ ○ ○ ○ □ □ ○ □ □ □
```

Boxed Final Answer:
\[
\boxed{
\begin{array}{cccccccccc}
\text{Row 1:} & \triangle & \triangle & \triangle & \triangle & \triangle & \triangle & \triangle & \triangle & \triangle & \triangle \\
\text{Row 2:} & \triangle & \triangle & \triangle & \triangle & \triangle & \triangle & \triangle & \triangle & \triangle & \triangle \\
\text{Row 3:} & \star & \triangle & \triangle & \triangle & \star & \star & \star & \triangle & \star & \star \\
\text{Row 4:} & \square & \bigcirc & \bigcirc & \square & \square & \bigcirc & \bigcirc & \square & \square & \square \\
\text{Row 5:} & \square & \triangle & \triangle & \triangle & \square & \square & \triangle & \triangle & \triangle & \triangle \\
\text{Row 6:} & \square & \triangle & \triangle & \triangle & \triangle & \triangle & \triangle & \triangle & \square & \square \\
\text{Row 7:} & \bigcirc & \bigcirc & \bigcirc & \bigcirc & \bigcirc & \bigcirc & \bigcirc & \bigcirc & \bigcirc & \bigcirc \\
\text{Row 8:} & \square & \bigcirc & \bigcirc & \bigcirc & \square & \square & \bigcirc & \square & \square & \square \\
\end{array}
}
\]