Understanding Pictographs and Circle Graphs

Each smiley face represents 5 students. With 4 smiley faces, the total number of students is 4 x 5 = 20. Therefore, Class A has 20 students.

The section for apples is given as \( \frac{1}{4} \) of the whole circle. This means apples represent \( \frac{1}{4} \) of the total, confirming that the correct answer is \( \frac{1}{4} \).

The pictograph shows 3 stars, with each star representing 2 books. Therefore, 3 stars x 2 books/star = 6 books read. The correct answer is 6.

A circle has a total angle of 360 degrees. If divided into 8 equal parts, each part has an angle of 360° ÷ 8 = 45°. Therefore, the correct answer is 45°.

Each triangle represents 10 cars. With 7 triangles, the total number of cars is 7 x 10 = 70. Therefore, the correct answer is 70.

A circle has 360 degrees. The section for bananas is 90 degrees. To find the fraction, divide 90 by 360: \( \frac{90}{360} = \frac{1}{4} \). Thus, the correct answer is \( \frac{1}{4} \).

The pictograph shows 5 suns, and each sun represents 4 days of sunshine. Therefore, 5 suns x 4 days/sun = 20 days of sunshine. The correct answer is 20.

A circle has 360 degrees. The fraction for sports is the shaded angle divided by the total angle: \( \frac{120}{360} = \frac{1}{3} \). Thus, the correct answer is \( \frac{1}{3} \).

Each heart represents 3 pets. With 8 hearts, the total number of pets is 8 hearts x 3 pets/heart = 24 pets. Therefore, the correct answer is 24.

A circle has a total of 360 degrees. The section for reading is 180 degrees. To find the fraction, divide 180 by 360, which simplifies to \frac{1}{2}. Therefore, the correct answer is \frac{1}{2}.