Patterns and Input/Output Tables — Answer Key
Part A: Fill in the Blank
Write the missing word or number on each line.
1. If a Grade 4 table shows input 2 maps to output 7, the function rule could be input plus 5.
2 plus 5 equals 7, so the rule input plus 5 fits this pair in the Grade 4 input/output function table.
2. Using the Grade 4 rule input plus 5, the output for input 8 is 13.
8 plus 5 equals 13, so the output for input 8 is 13 in this Grade 4 addition function rule sequence.
3. If a Grade 4 rule is input times 3 minus 2, the output for input 4 is 10.
4 times 3 equals 12, then 12 minus 2 equals 10, so the output for input 4 is 10 in this Grade 4 two-step rule.
4. Using the Grade 4 rule input times 3 minus 2, the output for input 5 is 13.
5 times 3 equals 15, then 15 minus 2 equals 13, so the output is 13 in this Grade 4 two-step function rule.
5. If a Grade 4 table shows input 6 maps to output 24, the rule could be input times 4.
6 times 4 equals 24, so the function rule input times 4 fits this Grade 4 input/output pair in the sequence.
6. Using the Grade 4 rule input times 2 plus 1, the output for input 7 is 15.
7 times 2 equals 14, then 14 plus 1 equals 15, so the output is 15 in this Grade 4 two-step function rule.
7. If a Grade 4 rule maps input 10 to output 5, the rule could be input divided by 2.
10 divided by 2 equals 5, so the function rule input divided by 2 fits the Grade 4 input/output pair shown.
8. If a Grade 4 rule is input times 4 plus 3, the output for input 2 is 11.
2 times 4 equals 8, then 8 plus 3 equals 11, so the output is 11 in this Grade 4 two-step function rule.
9. If a Grade 4 table shows input 9 maps to output 14, the rule could be input plus 5.
14 minus 9 equals 5, so the rule input plus 5 fits this pair in the Grade 4 input/output function table.
Part B: Matching
Match each item on the left to the correct answer on the right.
1. Match each item to its correct answer.
Grade 4 rule input plus 5, input 6
→ output is 11
output is 11
Grade 4 rule input times 3 minus 2, input 4
→ output is 10
output is 10
Grade 4 rule input times 2, input 9
→ output is 18
output is 18
Grade 4 rule input minus 7, input 15
→ output is 8
output is 8
6 plus 5 is 11, 4 times 3 minus 2 is 10, 9 times 2 is 18, and 15 minus 7 is 8 across these Grade 4 input/output rules.