Instructions:1. Read the given sequence.
2. Figure out if the sequence is skipping 5 or 10.
3. Enter the missing number by adding the skipped number to the number before or subtracting the skipped number from the number after the blank.
Example:
10, ___, 30, 40
10, 20 , 30, 40
5, 10, 15, ___, 25
5, 10, 15, 20 , 25