Let's solve the
"Counting tens and ones" worksheet step by step. This is a Grade 1 math exercise that helps students understand place value using base ten blocks.
---
🔢 Understanding Base Ten Blocks:
-
One long rod = 1
ten (which equals 10 ones)
-
One small cube = 1
one
We need to count how many
tens (rods) and
ones (cubes) are shown in each row, then write the total number.
---
✔ Problem 1 (Already Solved):
```
[3 rods] + [5 cubes] = 3 tens + 5 ones = 35
```
✔ Correct!
---
🟦 Problem 2:
```
[1 rod] + [7 cubes]
```
- Tens: 1
- Ones: 7
- Total: 1 × 10 + 7 =
17
👉 Answer:
1 ten + 7 ones = 17
---
🟨 Problem 3:
```
[4 rods] + [8 cubes]
```
- Tens: 4
- Ones: 8
- Total: 4 × 10 + 8 =
48
👉 Answer:
4 tens + 8 ones = 48
---
🟩 Problem 4:
```
[6 rods] + [3 cubes]
```
- Tens: 6
- Ones: 3
- Total: 6 × 10 + 3 =
63
👉 Answer:
6 tens + 3 ones = 63
---
🟪 Problem 5:
```
[5 rods] + [9 cubes]
```
- Tens: 5
- Ones: 9
- Total: 5 × 10 + 9 =
59
👉 Answer:
5 tens + 9 ones = 59
---
🟫 Problem 6:
```
[2 rods] + [4 cubes]
```
- Tens: 2
- Ones: 4
- Total: 2 × 10 + 4 =
24
👉 Answer:
2 tens + 4 ones = 24
---
✔ Final Answers:
1. 3 tens + 5 ones =
35
2. 1 ten + 7 ones =
17
3. 4 tens + 8 ones =
48
4. 6 tens + 3 ones =
63
5. 5 tens + 9 ones =
59
6. 2 tens + 4 ones =
24
---
💡
Explanation:
Each rod represents 10 units (a "ten"), and each small cube is 1 unit ("one"). By counting the rods and cubes separately, we can write the number in expanded form (like 3 tens + 5 ones), then combine them into a total number.
This builds foundational understanding of
place value — essential for future math skills!
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 blocks worksheet 3rd.
