Tiêu đề WK9 - Y5 - MATH - HW - GRIDS, NETS, & SOLIDS - AN.docx.pdf ✅

Question 1: Step 1: The large cube consists of 3 layers of smaller cubes, and each layer consists of 9 smaller cubes. When Jericho painted the top surface of the large cube red, all 9 smaller cubes in that layer will have one of its faces painted red. When Jericho painted the bottom surface of the large cube red, all 9 smaller cubes in that layer will have one of its faces painted red. Step 2: Total number of smaller cubes with at least one face painted red = 9 + 9 = 18 Answer: B. 18 Question 2: Step 1: If Amy put a light source in front of this solid, she will get a triangular shadow. If Amy put a light source in front of this solid, she will get a triangular shadow. Step 2: If Amy put a light source above this solid, she will get a triangular shadow. Answer: E. I, II, and III Question 3: ©Scholarly 2025. All rights reserved. All digital content and materials provided are proprietary and protected under copyright law. Any reproduction or sharing of digital files, including screenshots, recordings, or downloads, is strictly prohibited without the prior written consent of Scholarly. 1


Question 8: Step 1: The area of a rectangle is length * width. The area of the rectangle A is 3 * 2 = 6 square units. The area of rectangle C is 9 * 1 = 9 square units. Step 2: The area of a trapezium is 1/2 * (sum of parallel sides) * height. So, the area of the trapezium B is 1/2 * (4 + 5) * 2 = 9 square units. Answer: D. Quadrilaterals B and C Question 9: Step 1: Jeff wants to make a pyramid out of same-sized triangles. Step 2: A pyramid looks like the figure below- The least number of same-sized triangles he needs to make a pyramid is 4- one as the base and three forming the sides. Answer: B. 4 triangles Question 10: ©Scholarly 2025. All rights reserved. All digital content and materials provided are proprietary and protected under copyright law. Any reproduction or sharing of digital files, including screenshots, recordings, or downloads, is strictly prohibited without the prior written consent of Scholarly. 4