When two equal numbers are added, the sum of the two numbers will always be an even number. For example, 2 + 2 = 4, 4+4=8. As you can see, both sums, 4 and 8, can easily be divided into two again, making them even numbers. Now, help your child count the birds in this worksheet. Then, underline the matching number sentence. Ask your kids if the total number of birds in each picture is odd or even. Then, help them check the correct box with the right answer.