Arithmetic Grade One

Lesson Fifteen: Counting Backwards

Counting Backwards:


  The Counting Numbers Backwards (from 20):

    20, 19, 18, 17, 16, 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1

Which number is missing?


    20, 19, 18, 17, 16, __, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1

ANSWER; 15

NOTE: In the next applet students will identify the number which comes at the end of the sequence. Practice backwards counting with the student.