Arithmetic Grade One

Lesson Twenty: Missing Even or Odd Number

The Odd Numbers Under 20:

  1, 3, 5, 7, 9, 11, 13, 15, 17, 19

The Even Numbers Up To 20:

  2, 4, 6, 8, 10, 12, 14, 16, 18, 20

  1, 3, 5, 7, 9, 11, 13, __, 17, 19

  2, 4, 6, __, 10, 12, 14, 16, 18, 20

NOTE: In the next applet students will identify the missing odd or even number. Have the student practice writing the odd numbers and even numbers in separate lists.