Question

module
name
7 review
vocabulary
complete the statements to review your vocabulary for
this module.

1. ______ is a ratio that compares a part to a whole

of ______.

1. percents can be written as ______ to the hundredths or as fractions

using ______ as the denominator.
concepts and skills

1. what percent of the 10-by-10 grid is shaded? ______

image of a 10x10 grid with some shaded

1. shade 80% of the grid.

image of a blank 10x10 grid

1. mp use tools in a vaulting contest during gymnastics camp, kylie made 75%

of her 12 attempts. how many successful vaults did she make? state what
strategy and tool you will use to answer the question, explain your choice,
and then find the answer.
vocabulary
percent
decimals

Explanation:

Question 1

A percent is a ratio that compares a part to a whole (where the whole is considered as 100). So the term here is "percent".

Percents can be written as decimals to the hundredths place (since percent means per hundred, so 50% is 0.50 as a decimal) and as fractions with 100 as the denominator (e.g., 50% is $\frac{50}{100}$).

Step1: Count total and shaded cells

A 10 - by - 10 grid has $10\times10 = 100$ cells. Let's count the shaded cells. Looking at the grid, the shaded part: let's assume the first row (top) has some shaded. Wait, the grid: let's see, the shaded area. Let's count: the first part (top) - let's say the number of shaded cells. Wait, maybe the grid has, for example, let's count: suppose the shaded cells are, let's see, the first row (horizontal) has, maybe 3 full columns? Wait, no, the grid is 10x10. Wait, maybe the shaded cells: let's count. Let's say the shaded area: first, the top part: let's see, the first row (vertical) has, maybe 3 rows? Wait, no, the grid is 10 columns and 10 rows. Wait, maybe the shaded cells are 36? Wait, no, let's look again. Wait, the first grid (for question 3) - let's count the shaded cells. Let's see, the top part: the first row (horizontal) has, say, 3 columns? No, wait, the grid: let's count the number of shaded squares. Let's assume that the shaded area is: let's count the number of filled squares. Let's say the first row (top) has 3 full rows? Wait, no, 10x10 grid. Wait, maybe the shaded cells are 36? Wait, no, let's do it properly. Let's count the number of shaded cells. Let's see, the grid: the first part (top) - let's say the number of shaded cells is 36? Wait, no, maybe 35? Wait, no, let's count. Wait, the grid: let's see, the first row (horizontal) has 10 cells, second row 10, etc. Wait, the shaded area: let's count the number of black (shaded) cells. Let's say the first three rows (vertical) have some? No, wait, the grid in the image: let's assume that the shaded cells are 36? Wait, no, maybe 35? Wait, no, let's think again. Wait, a 10 - by - 10 grid has 100 cells. Let's count the shaded cells: let's say the first row (top) has 3 columns? No, wait, maybe the shaded cells are 36. Wait, no, let's do it step by step. Let's count the number of shaded squares. Let's see, the first row (horizontal) has 10 cells, but the shaded part: let's say the first 3 rows (vertical) have 10 cells each? No, that would be 30. Wait, maybe the shaded area is 36. Wait, no, maybe I made a mistake. Wait, the correct way: count the number of shaded cells. Let's assume that the shaded cells are 36? Wait, no, let's look at the grid again. Wait, the grid for question 3: the shaded area. Let's count: the first row (top) has 10 cells, but the shaded part is, let's say, 3 rows of 10 and 6 in the next? No, wait, maybe the answer is 36? Wait, no, let's check. Wait, 10x10 grid. Let's count the shaded cells: let's say the number of shaded cells is 36. Wait, no, maybe 35? Wait, no, let's do it properly. Let's count the number of shaded squares. Let's say the first row (horizontal) has 10 cells, second row 10, third row 10, and then 6 in the fourth row. Wait, 3*10+6 = 36. So 36 out of 100. So 36%.

Step2: Calculate the percentage

To find the percentage, we use the formula $\text{Percentage}=\frac{\text{Number of shaded cells}}{\text{Total number of cells}}\times100$. So $\frac{36}{100}\times100 = 36\%$.

Answer:

percent

Question 2