Understanding Odd and Even Numbers

The video tutorial covers the Common Core content standard 20 AC3, focusing on identifying odd and even numbers up to 20. It explains how to determine if a group of objects is odd or even by pairing or counting by twos. The tutorial emphasizes the importance of understanding that adding two identical numbers results in an even number. It encourages practice in counting by odd and even numbers and highlights the rules for sums of odd and even numbers. The video also suggests teaching additional rules, such as odd plus even equals odd, to help students identify incorrect answers.

What is the main focus of the common core content standard 20 ac3?

• Identifying prime numbers

• Understanding fractions

• Determining if a group of objects is odd or even

• Learning multiplication tables

How can an even number be expressed according to the video?

• As a difference of two odd numbers

• As a product of two odd numbers

• As a sum of two equal addends

• As a sum of two different numbers

What should students know if they have one object left over when counting by twos?

• The number is composite

• The number is odd

• The number is prime

• The number is even

What is the result of adding two odd numbers together?

• An even number

• A composite number

• An odd number

• A prime number

Which of the following is an example of counting by even numbers?

• 1, 3, 5, 7

• 5, 10, 15, 20

• 2, 4, 6, 8

• 3, 6, 9, 12

What should students do to find the next number when counting by twos?

• Subtract 2 from the current number

• Add 2 to the current number

• Add 1 to the current number

• Subtract 1 from the current number

What is the result of adding two even numbers together?

• An odd number

• An even number

• A prime number

• A composite number

Which of the following is an example of adding two odd numbers?

• 5 + 5

• 2 + 2

• 3 + 3

• 4 + 4

What should students use to show their answers when adding odd numbers?

• Calculators

• Tables

• Drawings

• Graphs

What is the result of adding an odd number and an even number?

• An odd number

• An even number

• A prime number

• A composite number