Number patterns problems using only addition operations. These are a great first step for common core requirements for number patterns in 4th grade. The patterns in these worksheets will be multiples of the pattern number, and they can be a good bridge between addition and multiplication facts.
These number pattern worksheets deal with addition rules, and you'll find patterns and rules involve smaller numbers as a well as larger addends. These worksheets are approrpriate for 4th and 5th grade, but might be introduced later if the topic wasn't covered earlier in the curriculum. Some of the number patterns on these worksheets involve two step rules, making the patterns slightly more complex to ascertain.