Decimal number identification worksheet with shaded grids and multiple-choice answers.

Let me carefully examine the image to solve the problem.

The task asks: "Which decimal number is illustrated?"
There are four 10×10 grids (each representing 1 whole = 100 squares), with some squares shaded. For each grid, we need to identify the correct decimal value from the given choices.

I’ll analyze each grid one by one.

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Top-left grid (orange):
- It’s a 10×10 grid → 100 total squares.
- Shaded squares: The left 7 full columns = 7 × 10 = 70 squares.
- Plus in the 8th column, 6 squares are shaded (since it stops before the bottom row).
- So total shaded = 70 + 6 = 76 squares.
- Decimal = 76/100 = 0.76

Choices: 0.70, 0.76, 0.66 → ✔ 0.76 is correct.

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Top-right grid (yellow):
- Full columns shaded: 9 full columns = 9 × 10 = 90 squares.
- In the 10th column, only 9 squares are shaded (top 9 rows), 1 unshaded at bottom.
- Total shaded = 90 + 9 = 99 squares.
- Decimal = 99/100 = 0.99

Choices: 0.90, 0.79, 0.99 → ✔ 0.99 is correct.

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Bottom-left grid (light green):
- Full columns shaded: 7 full columns = 70 squares.
- 8th column: all 10 squares shaded? Wait — looking closely, the shading goes across 8 full columns (columns 1–8), and column 9 is *not* shaded at all. Let me recount.

Actually, the grid shows shading up to the 8th vertical line — meaning 8 full columns = 8 × 10 = 80 squares shaded.

Yes — it's exactly 80 out of 100 → 0.8

Choices: 0.8, 0.08, 0.7 → ✔ 0.8 is correct.

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Bottom-right grid (dark green):
- Full columns shaded: 5 full columns = 50 squares.
- In the 6th column, only 3 squares are shaded (top 3 rows).
- Total shaded = 50 + 3 = 53 squares.
- Decimal = 53/100 = 0.53

Choices: 0.53, 0.03, 1.53 → ✔ 0.53 is correct.

So the correct answers are:
- Top-left: 0.76
- Top-right: 0.99
- Bottom-left: 0.8
- Bottom-right: 0.53

Since the question says “Which decimal number is illustrated?” and there are four separate grids, the expected output is likely the four correct choices — but the format asks for a single final answer. However, looking at the layout, each grid has its own multiple-choice set, and the student is to tick the correct one per grid.

But the instruction says:
> Solve the problem accurately.
> Final Answer: [Provide only the final correct answer.]

Given that there are four independent questions, and the user likely expects the four correct decimals (as that’s what the worksheet asks), I will list them in order as the final answer.

Final Answer:
0.76, 0.99, 0.8, 0.53