Problem Description:
The task involves counting groups of 10 in a series of dot patterns and writing the total number of dots for each group. The goal is to practice counting by tens.
Solution Approach:
1.
Identify Groups of 10: Each row or cluster of dots represents a group of 10.
2.
Count the Number of Groups: Determine how many groups of 10 are present in each pattern.
3.
Calculate the Total: Multiply the number of groups by 10 to get the total number of dots.
4.
Write the Answer: Fill in the corresponding box with the total count.
Step-by-Step Solution:
#### Row 1:
- There are
2 groups of 10.
- Total: \( 2 \times 10 = 20 \).
- Write
20 in the box.
#### Row 2:
- There are
3 groups of 10.
- Total: \( 3 \times 10 = 30 \).
- Write
30 in the box.
#### Row 3:
- There are
5 groups of 10.
- Total: \( 5 \times 10 = 50 \).
- Write
50 in the box.
#### Row 4:
- There are
7 groups of 10.
- Total: \( 7 \times 10 = 70 \).
- Write
70 in the box.
#### Row 5:
- There are
8 groups of 10.
- Total: \( 8 \times 10 = 80 \).
- Write
80 in the box.
#### Row 6:
- There are
9 groups of 10.
- Total: \( 9 \times 10 = 90 \).
- Write
90 in the box.
Final Answer:
The completed worksheet should look like this:
```
Counting groups of 10
Worksheet 1
Row 1: [20]
Row 2: [30]
Row 3: [50]
Row 4: [70]
Row 5: [80]
Row 6: [90]
```
Explanation:
This exercise helps students understand place value and the concept of grouping by tens, which is fundamental in learning arithmetic operations. By visually counting the groups and multiplying by 10, students reinforce their understanding of multiples of 10.
Final Answer:
\[
\boxed{20, 30, 50, 70, 80, 90}
\]
Parent Tip: Review the logic above to help your child master the concept of groups of ten worksheet 1st grade.
