This easy worksheet eases third graders into pattern rules with familiar skip-counts and a friendly mix of formats. Students fix three sentences (the next number in 9, 18, 27, 36; the rule for 30, 25, 20, 15; and the next number in 7, 14, 21, 28), then fill blanks for the add-8 rule behind 8, 16, 24, 32 and a sun-moon-star repeating pattern. True-or-false items check whether 12, 15, 18, 21 follows add 3 and whether shrinking patterns get smaller.
By naming the rule out loud, kids build the habit of describing patterns instead of just listing them.
Style:
Patterns and Number Sequences
Part A: Fix the Sentence
Each sentence has an error. Rewrite it correctly on the line.
1. Fix the sentence:
The next number in 9, 18, 27, 36 is 44.
Rewrite: The next number in 9, 18, 27, 36 is 45.
2. Fix the sentence:
The rule for the pattern 30, 25, 20, 15 is add 5.
Rewrite: The rule for the pattern 30, 25, 20, 15 is subtract 5.
3. Fix the sentence:
In the pattern 7, 14, 21, 28, the next number is 34.
Rewrite: In the pattern 7, 14, 21, 28, the next number is 35.
Part B: Fill in the Blank
Write the missing word or number on each line.
1. The pattern 8, 16, 24, 32 follows the rule add 8.
2. What comes next in 11, 22, 33, 44, 55?
3. In the repeating pattern sun, moon, star, sun, moon, the next shape is star.
4. An input-output table uses the rule add 6. If the input is 14, the output is 20.
Part C: True or False?
Read each statement. Circle True or False.
1. The pattern 12, 15, 18, 21 follows the rule add 3.
True False
2. The next number after 50, 40, 30, 20 is 15.
True False
3. A shrinking pattern gets smaller each time.
True False
Patterns and Number Sequences
★ Part A: Fix the Sentence
Each sentence has an error. Rewrite it correctly on the line.
1) Fix the sentence:
The next number in 9, 18, 27, 36 is 44.
Rewrite: The next number in 9, 18, 27, 36 is 45.
2) Fix the sentence:
The rule for the pattern 30, 25, 20, 15 is add 5.
Rewrite: The rule for the pattern 30, 25, 20, 15 is subtract 5.
3) Fix the sentence:
In the pattern 7, 14, 21, 28, the next number is 34.
Rewrite: In the pattern 7, 14, 21, 28, the next number is 35.
★ Part B: Fill in the Blank
Write the missing word or number on each line.
1) The pattern 8, 16, 24, 32 follows the rule add 8.
2) What comes next in 11, 22, 33, 44, 55?
3) In the repeating pattern sun, moon, star, sun, moon, the next shape is star.
4) An input-output table uses the rule add 6. If the input is 14, the output is 20.
★ Part C: True or False?
Read each statement. Circle True or False.
1) The pattern 12, 15, 18, 21 follows the rule add 3.
True
False
2) The next number after 50, 40, 30, 20 is 15.
True
False
3) A shrinking pattern gets smaller each time.
True
False
Ready to Practice?
Complete each section carefully.
10 Questions
15-20 minutes
Auto-graded
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