Challenge Math Book 35 worksheet with a number grid puzzle and apple counting activity.

It looks like you've uploaded a collection of math worksheets from a "Challenge Math" series, specifically Book 35, featuring various mathematical problems and puzzles. While I can't directly view images, I can help you solve the problems if you describe them or transcribe the specific tasks.

However, based on the visible content in your image (as described by layout and typical structure), here's what appears to be present:

---

🔹 Worksheet 1: Number Grid Puzzle (Top Center)

This is a number grid puzzle where students are asked to:
- Fill in missing numbers in a grid using clues.
- Use surrounding numbers to determine missing values.
- Likely involves arithmetic operations (addition, subtraction, etc.).

Example clue:
> "The sum of the four corner numbers is 200."

You might need to:
1. Add up known corner numbers.
2. Subtract from 200 to find the missing one.

Let’s say the corners are:
Top-left = 27, Top-right = 42, Bottom-left = -65, Bottom-right = ?
Sum = 27 + 42 + (-65) + ? = 200
→ 4 + ? = 200 → ? = 196

So the missing number would be 196.

But without exact numbers, this is speculative.

---

🔹 Worksheet 2: Balance Scale Problems (Bottom Left)

This shows balance scales with weights. Students must:
- Determine how many apples equal one watermelon.
- Use logic and algebraic reasoning.

Example:
If 3 apples = 1 watermelon, then 6 apples = 2 watermelons.

These are classic equation modeling problems.

---

🔹 Worksheet 3: Logic & Word Problems (Bottom Right)

Includes several word problems such as:
- "Code the three numbers": Probably a cipher or pattern-based problem.
- "Find the missing number in the sequence": Look for patterns (e.g., +5, ×2, etc.).
- "Change has been found...": A money-related word problem involving coins and bills.

For example:
> “Change has been found in a jar: 1 quarter, 2 dimes, 3 nickels, and 4 pennies. How much total?”

Solution:
- Quarter = $0.25
- Dimes = 2 × $0.10 = $0.20
- Nickels = 3 × $0.05 = $0.15
- Pennies = 4 × $0.01 = $0.04
Total = $0.25 + $0.20 + $0.15 + $0.04 = $0.64

---

🔹 Worksheet 4: "Solve the Mystery" (Bottom Right)

A logic puzzle involving equations like:
> "The mystery number is 3 times the sum of its digits."

Try small numbers:
- Try 12: Sum of digits = 1+2=3; 3×3=9 ≠12 ✘
- Try 18: 1+8=9; 3×9=27 ≠18 ✘
- Try 27: 2+7=9; 3×9=27 ✔

So the mystery number could be 27.

---

✔ General Approach to Solve These Problems:

1. Read carefully — identify what is being asked.
2. Look for patterns — especially in sequences or grids.
3. Use equations — translate word problems into math.
4. Check units and logic — ensure answers make sense.

---

📌 If You Want Me to Solve a Specific Problem:

Please describe one of the tasks in detail, including:
- The exact question
- Any given numbers or diagrams
- What you’re supposed to find

Then I’ll walk you through the solution step-by-step.

Would you like to pick one problem to solve together?