77
Patterns
25
22
19
16
Observe the pattern below.
(a) Continue the pattern for the remaining rows.
(b) Record the number of shaded squares in the right column.
The number pattern can be written as:
Here, we are subtracting 3 from the numbers each time.
The numbers are decreasing.
25, 22, 19, 16, 13, 10, 7 is a decreasing number pattern.
25 , 22 , 19 , 16 , ____ , ____ , ____ , ____
- 3 - 3 - 3 - 3
Decreasing Pattern
Tip: Number patterns involving subtraction