Patterns and Input/Output Tables — Answer Key
Part A: Multiple Choice
Circle the best answer for each question.
1. In a Grade 4 table with rule input times 4, the output is 36. What is the input?
A) 7
B) 8
C) 9
D) 10
9 times 4 equals 36, so the missing input in this Grade 4 input/output table is 9 when the function rule is times 4.
2. In a Grade 4 table with rule input plus 8, the output is 21. What is the input?
A) 11
B) 12
C) 13
D) 14
21 minus 8 equals 13, so the missing input is 13 since 13 plus 8 equals 21 in this Grade 4 function table.
3. In a Grade 4 table with rule input times 3, the output is 27. What is the input?
A) 7
B) 8
C) 9
D) 10
27 divided by 3 equals 9, so the missing input is 9 because 9 times 3 equals 27 in this Grade 4 function table.
4. In a Grade 4 table with rule input minus 5, the output is 17. What is the input?
A) 20
B) 21
C) 22
D) 23
17 plus 5 equals 22, so the missing input is 22 because 22 minus 5 equals 17 in this Grade 4 function table.
Part B: Fill in the Blank
Write the correct answer on each line.
1. In a Grade 4 table with rule input times 6, if the output is 42, the input is 7.
42 divided by 6 equals 7, so the missing input is 7 because 7 times 6 equals 42 in this Grade 4 function table.
2. In a Grade 4 table with rule input plus 12, if the output is 30, the input is 18.
30 minus 12 equals 18, so the missing input is 18 because 18 plus 12 equals 30 in this Grade 4 function table.
3. In a Grade 4 table with rule input divided by 4, if the output is 6, the input is 24.
6 times 4 equals 24, so the missing input is 24 because 24 divided by 4 equals 6 in this Grade 4 function table.
4. In a Grade 4 table with rule input times 5 plus 1, if the output is 26, the input is 5.
26 minus 1 equals 25, then 25 divided by 5 equals 5, so the missing input is 5 in this Grade 4 two-step function rule.
5. In a Grade 4 table with rule input minus 9, if the output is 11, the input is 20.
11 plus 9 equals 20, so the missing input is 20 because 20 minus 9 equals 11 in this Grade 4 function table.