ATI TEAS Math 7813 Questions and Answers

Why is composing and decomposing numbers important? - Ans Students who are able to fluently decompose quantities and then compose quantities are able to adapt their calculations to different sets of numbers. Decomposing larger numbers by place value is also an important concept and skill that students can use when adding, subtracting, multiplying and dividing. What is the purpose of decomposing numbers? - Ans Decomposing is breaking a number into parts. Students are used to working with whole numbers (using objects to make 5) and will now learn that numbers can be broken into parts (2 and 3 is the same as 5). They will decompose numbers drawing and using objects. What is the difference between composing and decomposing numbers? - Ans Compose: To compose in math is putting a number together using its parts. Decompose: To decompose in math is to break down numbers into parts. Add: To add is to join two numbers together. Subtract: To subtract is to take away from another to see the difference. What is a prime number? - Ans it only has 1 and itself as factors examples of prime numbers - Ans 2, 3, 5, 7, 11, 13, 17, 19, 23 What is a composite number? - Ans There are multiple factors Examples of composite numbers? - Ans 4,6,8,9,10,12,14,15,16,18,18,20,21,22,24,25,26,27,28,30,32,33,34,35,36 greater than symbol - Ans > less than symbol - Ans < A sphere has - Ans no flat surfaces. It's completely round. A cone has - Ans one face. It is a circle. The rest of the shape is curved. A cube has - Ans 6 faces. They are all squares. A cylinder has - Ans two faces. They are both circles. The rest of the shape is curved. Faces are flat surfaces of a three-dimensional shape. A rectangular prism has - Ans 6 faces. They are all rectangles. Faces are flat surfaces of a three-dimensional shape. It is not a cube. All faces of a cube are squares. On this shape, they are not.