Let's solve each section of the worksheet step by step.
---
Section 1: Solve
The problems are:
- \( 5 - 4 \)
- \( 4 + 6 \)
- \( 2 - 0 \)
#### Solution:
1. \( 5 - 4 = 1 \)
2. \( 4 + 6 = 10 \)
3. \( 2 - 0 = 2 \)
Answer:
\[
\boxed{1, 10, 2}
\]
---
Section 2: How much money?
The image shows four coins:
- Two quarters (each worth $0.25)
- One dime (worth $0.10)
- One nickel (worth $0.05)
#### Solution:
- Total value of two quarters: \( 0.25 + 0.25 = 0.50 \)
- Value of one dime: \( 0.10 \)
- Value of one nickel: \( 0.05 \)
Adding them up:
\[
0.50 + 0.10 + 0.05 = 0.65
\]
Answer:
\[
\boxed{0.65}
\]
---
Section 3: Greater than or less than?
Compare the numbers and write \( < \) or \( > \).
#### Problems:
1. \( 37 \) and \( 42 \)
2. \( 102 \) and \( 112 \)
3. \( 111 \) and \( 88 \)
4. \( 21 \) and \( 13 \)
5. \( 45 \) and \( 54 \)
6. \( 12 \) and \( 21 \)
#### Solution:
1. \( 37 < 42 \)
2. \( 102 < 112 \)
3. \( 111 > 88 \)
4. \( 21 > 13 \)
5. \( 45 < 54 \)
6. \( 12 < 21 \)
Answer:
\[
\boxed{<, <, >, >, <, <}
\]
---
Section 4: Write the missing number
Solve the equations to find the missing numbers.
#### Problems:
1. \( 5 + \_ = 4 + 5 \)
2. \( 7 + 3 = 3 + \_ \)
#### Solution:
1. \( 5 + x = 4 + 5 \)
- Simplify the right side: \( 4 + 5 = 9 \)
- So, \( 5 + x = 9 \)
- Solve for \( x \): \( x = 9 - 5 = 4 \)
2. \( 7 + 3 = 3 + x \)
- Simplify the left side: \( 7 + 3 = 10 \)
- So, \( 10 = 3 + x \)
- Solve for \( x \): \( x = 10 - 3 = 7 \)
Answer:
\[
\boxed{4, 7}
\]
---
Section 5: Write in the missing numbers under the rosary beads
The sequence is given as: \( 2, \_, \_, \_, 4 \).
#### Solution:
The sequence appears to be increasing by a constant difference. The first number is 2, and the last number is 4. Since there are three missing numbers between them, we can assume the sequence increases by \( \frac{4 - 2}{4} = 0.5 \) per step.
So the sequence is:
\[
2, 2.5, 3, 3.5, 4
\]
Answer:
\[
\boxed{2.5, 3, 3.5}
\]
---
Section 6: What time is it?
Read the times on the clocks.
#### Clock 1:
- Hour hand is on 9.
- Minute hand is on 12 (0 minutes past the hour).
Time: \( 9:00 \)
#### Clock 2:
- Hour hand is between 1 and 2 (closer to 1).
- Minute hand is on 2 (10 minutes past the hour).
Time: \( 1:10 \)
Answer:
\[
\boxed{9:00, 1:10}
\]
---
Final Answer Summary:
1. \( \boxed{1, 10, 2} \)
2. \( \boxed{0.65} \)
3. \( \boxed{<, <, >, >, <, <} \)
4. \( \boxed{4, 7} \)
5. \( \boxed{2.5, 3, 3.5} \)
6. \( \boxed{9:00, 1:10} \)
Parent Tip: Review the logic above to help your child master the concept of mental arithmetic worksheet.
