Finding Unknown Numbers in Number Patterns
Instructions: Find the missing numbers in each pattern. Look carefully at how the numbers are changing!
1. Complete these counting patterns:
a) 5, 10, 15, ________, 25, 30
b) 3, 6, 9, 12, ________, 18
c) 50, 45, 40, ________, 30, 25
d) 12, 14, 16, 18, ________, 22
2. Find the unknown number:
a) 2, 4, 6, ________, 10, 12, 14
b) 100, 90, 80, 70, ________, 50
c) 7, 14, 21, ________, 35, 42
d) 20, 25, 30, ________, 40, 45
3. These patterns have TWO missing numbers. Find them both:
a) 4, 8, 12, ________, 20, ________, 28
b) 55, 50, ________, 40, 35, ________
c) 6, 12, ________, 24, ________, 36
4. Challenge! Work out the rule and complete the pattern:
a) 2, 5, 8, 11, ________, ________
Rule: Add ________ each time
b) 30, 27, 24, 21, ________, ________
Rule: Subtract ________ each time
c) 5, 10, 20, 40, ________, ________
Rule: ________________________________