Part of an Amount: Approximate the area of the colored part of the shape

Examples with solutions for Part of an Amount: Approximate the area of the colored part of the shape

Exercise #1

What is the marked part?

Video Solution

Step-by-Step Solution

Let's solve this problem step-by-step:

First, examine the grid and count the total number of sections. Observing the grid, there is a total of 6 columns, each representing equal-sized portions along the grid, as evidenced by vertical lines.

Next, count how many of these sections are colored. The entire portion from the first column to the fourth column is colored. This means we have 4 out of 6 sections that are marked red.

We can then express the colored area as a fraction: 46 \frac{4}{6} .

Answer

46 \frac{4}{6}

Exercise #2

What fraction does the part shaded in red represent?

Video Solution

Step-by-Step Solution

To work out what the marked part is, we need to count how many coloured squares there are compared to how many squares there are in total.

If we count the coloured squares, we see that there are four such squares.

If we count all the squares, we see that there are seven in all.

Therefore, 4/7 of the squares are shaded in red.

Answer

47 \frac{4}{7}

Exercise #3

What is the marked part?

Video Solution

Step-by-Step Solution

Let's begin:

Step 1: Upon examination, the diagram divides the rectangle into 7 vertical sections.

Step 2: The entire shaded region spans the full width, essentially covering all sections, so the shaded number is 7.

Step 3: The fraction of the total rectangle that is shaded is 77 \frac{7}{7} .

Step 4: Simplifying, 77 \frac{7}{7} becomes 1 1 .

Therefore, the solution is marked by the choice: Answers a + b.

Answer

Answers a + b

Exercise #4

What is the marked part?

Video Solution

Step-by-Step Solution

To solve this problem, we will count the total number of equal sections in the grid and the number of these sections that the marked area covers.

  • Step 1: Determine Total Sections. The grid is divided into several vertical sections. By examining the grid lines, we see that the total number of vertical sections is 7.
  • Step 2: Determine Marked Sections. The marked (colored) part spans 3 of these vertical sections within the total grid.
  • Step 3: Compute Fraction. The fraction of the total area covered by the marked part is calculated as the number of marked sections divided by the total number of sections: 37 \frac{3}{7} .

Therefore, the fraction of the area that is marked is 37 \frac{3}{7} .

Answer

37 \frac{3}{7}

Exercise #5

What is the marked part?

Video Solution

Step-by-Step Solution

To solve the problem of finding the fraction of the marked part in the grid:

The grid consists of a series of squares, each of equal size. The task is to count how many squares are marked compared to the entire grid.

  • First, count the total number of squares in the entire grid.
  • Next, count the number of marked (colored) squares.
  • Then, calculate the fraction of the marked part by dividing the number of marked squares by the total number of squares.

Let's perform these steps:

The grid displays several rows of columns. Visually, there appear to be a total of 10 squares in one row with corresponding columns, forming a grid.

Count the marked squares from the provided SVG graphic:

  • There are 4 shaded (marked) regions.

Total squares: 10 (lines are shown for organizing squares, as seen).

Calculate the fraction:

marked squarestotal squares=410 \frac{\text{marked squares}}{\text{total squares}} = \frac{4}{10}

Thus, the marked part of the shape can be given as a fraction: 410 \frac{4}{10} .

Answer

410 \frac{4}{10}

Exercise #6

What is the marked part?

Video Solution

Step-by-Step Solution

To determine the fraction of the area that is shaded, we need to analyze the diagram carefully.

  • Step 1: Count the total number of squares in the grid.
  • Step 2: Count the number of shaded squares.
  • Step 3: Calculate the fraction by dividing the number of shaded squares by the total number of squares.
  • Step 4: Compare this fraction with the given choices.

Now, let's execute each step:

Step 1: The grid is structured in terms of columns and rows. Observing the entire structure, we find that there are clearly 10 columns and 1 row of squares, leading to a total of 10×1=1010 \times 1 = 10 squares in the grid.

Step 2: Each square width equals that of one column; 4 shaded sections fill up to 5 sections of columns horizontally:

  • Two small shaded squares (1 width) plus one square is completely filled as part of two columns, making up 2 columns in total.
  • One large shaded rectangle (5 width) fully occupies the width of a large single square (2 columns), counting as 5 columns (2 + 3 more), confirming 2 + 3 column segments cover it.

Step 3: Simplifies the amount as layed means 55 shaded parts.

Step 4: Thus, the fraction calculated is 510\frac{5}{10}, which simplifies to 12\frac{1}{2}.

The correct answer choice corresponds to choices b and c as 510\frac{5}{10} and 12\frac{1}{2} are equivalent by simplification.

Therefore, the answer is:

Answers b and c

Answer

Answers b and c

Exercise #7

What is the marked part?

Video Solution

Step-by-Step Solution

To determine the marked part, we need to calculate the fraction of the diagram that is shaded red.

First, we count the total number of rectangles in the diagram. There are 10 rectangles visible along a straight line.

Next, we count the number of rectangles shaded red. There are 8 red rectangles in the diagram.

Therefore, the fraction of the total diagram that is marked red is calculated as Number of Red RectanglesTotal Number of Rectangles=810 \frac{\text{Number of Red Rectangles}}{\text{Total Number of Rectangles}} = \frac{8}{10} .

This fraction simplifies to 45 \frac{4}{5} , but the answer provided is in the form 810 \frac{8}{10} , which is equivalent.

Therefore, the marked part of the diagram is 810 \frac{8}{10} .

Answer

810 \frac{8}{10}

Exercise #8

What is the marked part?

Video Solution

Step-by-Step Solution

We can see that there are three shaded parts out of six parts in total,

that is - 3/6

But this is not the final answer yet!

Let'snotice that this fraction can be reduced,

meaning, it is possible to divide both the numerator and the denominator by the same number,

so that the fraction does not lose its value. In this case, the number is 3.

3:3=1
6:3=2

And so we get 1/2, or one half.
And if we look at the original drawing, we can see that half of it is colored.

Answer

12 \frac{1}{2}

Exercise #9

What is the marked part?

Video Solution

Answer

16 \frac{1}{6}

Exercise #10

What is the marked part?

Video Solution

Answer

56 \frac{5}{6}