This Grade 4 worksheet introduces simple addition and subtraction rules in number patterns following CCSS 4.OA.5. Students identify the rule, fix incorrect rule statements, fill in missing terms in short sequences, and explain in their own words how rules like add 3 or subtract 5 generate the listed terms with confidence. Students work with simple add-on patterns and explain the rule in their own words for stronger Grade 4 mathematical reasoning skills.
Style:
Patterns and Input/Output Tables
Part A: Fix the Sentence
Each sentence has an error. Rewrite it correctly on the line.
1. Fix the sentence:
The pattern 3, 6, 9, 12 follows the rule add 2.
Rewrite: The pattern 3, 6, 9, 12 follows the rule add 3.
2. Fix the sentence:
The next term in 20, 17, 14, 11 is 9.
Rewrite: The next term in 20, 17, 14, 11 is 8.
3. Fix the sentence:
In 5, 10, 15, 20 the rule is multiply by 2.
Rewrite: In 5, 10, 15, 20 the rule is add 5.
Part B: Fill in the Blank
Write the missing word or number on each line.
1. The pattern 4, 8, 12, 16 follows the rule add 4 each step.
2. The next term after 7, 14, 21, 28 is 35.
3. In the pattern 30, 25, 20, 15 the rule is subtract 5.
4. The missing term in 9, 18, 27, 36 is 27.
Part C: Short Answer
Answer each question in one or two complete sentences.
1. Describe the rule for the Grade 4 pattern 6, 12, 18, 24 and give the next term.
The rule is add 6 each time. Starting at 6 and adding 6 gives 12, 18, 24, and the next term is 30 because 24 plus 6 equals 30.
2. Explain how to find the rule of a decreasing pattern like 50, 45, 40, 35 in Grade 4.
Subtract one term from the previous term: 50 minus 45 is 5. Each term drops by 5, so the rule is subtract 5, and the next term after 35 is 30.
Patterns and Input/Output Tables
★ Part A: Fix the Sentence
Each sentence has an error. Rewrite it correctly on the line.
1) Fix the sentence:
The pattern 3, 6, 9, 12 follows the rule add 2.
Rewrite: The pattern 3, 6, 9, 12 follows the rule add 3.
2) Fix the sentence:
The next term in 20, 17, 14, 11 is 9.
Rewrite: The next term in 20, 17, 14, 11 is 8.
3) Fix the sentence:
In 5, 10, 15, 20 the rule is multiply by 2.
Rewrite: In 5, 10, 15, 20 the rule is add 5.
★ Part B: Fill in the Blank
Write the missing word or number on each line.
1) The pattern 4, 8, 12, 16 follows the rule add 4 each step.
2) The next term after 7, 14, 21, 28 is 35.
3) In the pattern 30, 25, 20, 15 the rule is subtract 5.
4) The missing term in 9, 18, 27, 36 is 27.
★ Part C: Short Answer
Answer each question in one or two complete sentences.
1) Describe the rule for the Grade 4 pattern 6, 12, 18, 24 and give the next term.
The rule is add 6 each time. Starting at 6 and adding 6 gives 12, 18, 24, and the next term is 30 because 24 plus 6 equals 30.
2) Explain how to find the rule of a decreasing pattern like 50, 45, 40, 35 in Grade 4.
Subtract one term from the previous term: 50 minus 45 is 5. Each term drops by 5, so the rule is subtract 5, and the next term after 35 is 30.
Ready to Practice?
Complete each section carefully.
9 Questions
15-20 minutes
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