Let's solve the problem step by step.
Task:
Determine the
place value of the
underlined digit in each number.
The numbers are two-digit numbers, and in each case, the
underlined digit is either the
tens digit or the
ones digit.
---
Understanding Place Value:
In a two-digit number:
- The
left digit (first digit) represents the
tens place.
- The
right digit (second digit) represents the
ones place.
So:
- If the underlined digit is on the
left, its place value is
tens.
- If the underlined digit is on the
right, its place value is
ones.
We will now go through each number:
---
Left Column:
1.
28 → Underlined:
2 → Tens place →
20
2.
21 → Underlined:
1 → Ones place →
1
3.
10 → Underlined:
1 → Tens place →
10
4.
11 → Underlined:
1 → Tens place →
10
5.
85 → Underlined:
8 → Tens place →
80
6.
68 → Underlined:
6 → Tens place →
60
7.
17 → Underlined:
1 → Tens place →
10
8.
57 → Underlined:
5 → Tens place →
50
9.
43 → Underlined:
4 → Tens place →
40
---
Right Column:
1.
49 → Underlined:
4 → Tens place →
40
2.
64 → Underlined:
6 → Tens place →
60
3.
48 → Underlined:
4 → Tens place →
40
4.
59 → Underlined:
5 → Tens place →
50
5.
94 → Underlined:
9 → Tens place →
90
6.
72 → Underlined:
7 → Tens place →
70
7.
29 → Underlined:
2 → Tens place →
20
8.
31 → Underlined:
3 → Tens place →
30
9.
97 → Underlined:
9 → Tens place →
90
---
✔ Final Answers (Fill in the blanks):
#### Left Column:
| Number | Place Value |
|--------|-------------|
| 28 | 20 |
| 21 | 1 |
| 10 | 10 |
| 11 | 10 |
| 85 | 80 |
| 68 | 60 |
| 17 | 10 |
| 57 | 50 |
| 43 | 40 |
#### Right Column:
| Number | Place Value |
|--------|-------------|
| 49 | 40 |
| 64 | 60 |
| 48 | 40 |
| 59 | 50 |
| 94 | 90 |
| 72 | 70 |
| 29 | 20 |
| 31 | 30 |
| 97 | 90 |
---
🔍 Summary:
- The
place value is the
value of the digit based on its position.
- For tens: multiply the digit by 10.
- For ones: the digit itself.
✔ All answers are now determined!
Let me know if you'd like this as a printable answer key!
Parent Tip: Review the logic above to help your child master the concept of place value worksheet 1st grade.
