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Vidaara.orgClass 4 · Mathematics
CodeVID-M04-10-IOT-01
Input-Output Tables - Assignment
Chapter: Number Patterns
Topic: Input-Output Tables and Rules
Maximum Marks: 35
Time: 75 minutes
Name: ____________________ Roll No.: __________ Date: ____________

General Instructions

  • All questions are compulsory.
  • Section A carries 1 mark each, Section B 2 marks, Section C 3 marks and Section D 5 marks.
  • Show all working for Sections B, C and D. Only final answers are given at the end — for full solutions, raise your doubts with your teacher.
Section A — Multiple Choice Questions 5 × 1 = 5 marks
1.
An input-output table applies a ___ to each input.
  • A.number
  • B.rule
  • C.shape
  • D.colour
2.
Rule "$+5$", input $3$: output $=$
  • A.$2$
  • B.$8$
  • C.$15$
  • D.$5$
3.
Rule "$\times2$", input $4$: output $=$
  • A.$6$
  • B.$8$
  • C.$2$
  • D.$42$
4.
To find the rule, compare inputs and:
  • A.titles
  • B.outputs
  • C.colours
  • D.shapes
5.
The same rule is used for:
  • A.only the first row
  • B.every row
  • C.no rows
  • D.the last row
Section B — Short Answer (2 marks) 4 × 2 = 8 marks
6.
Rule "$+3$": input $5$ gives output:
7.
Rule "$\times4$": input $2$ gives output:
8.
Rule "$-2$": input $10$ gives output:
9.
If input $4$ gives output $12$, the rule could be:
Section C — Short Answer (3 marks) 4 × 3 = 12 marks
10.
Rule "$\times5$": find outputs for inputs $1, 2, 3$.
11.
Inputs $2, 4, 6$ give outputs $5, 7, 9$. Find the rule.
12.
Rule "$+10$": input $25$ gives output:
13.
Inputs $1, 2, 3$ give outputs $4, 8, 12$. Find the rule.
Section D — Long Answer (5 marks) 2 × 5 = 10 marks
14.
Complete the table for the rule "$\times3$": inputs $2, 5, 7$.
15.
A table shows inputs $3, 5, 8$ with outputs $7, 11, 17$. Find the rule and the output for an input of $10$.

Answer Key

Section A — Multiple Choice Questions
  1. (B) rule
  2. (B) $8$
  3. (B) $8$
  4. (B) outputs
  5. (B) every row
Section B — Short Answer (2 marks)
  1. $8$.
  2. $8$.
  3. $8$.
  4. $\times3$.
Section C — Short Answer (3 marks)
  1. $5, 10, 15$.
  2. $+3$.
  3. $35$.
  4. $\times4$.
Section D — Long Answer (5 marks)
  1. Outputs $6, 15, 21$.
  2. Rule "$\times2+1$"; output $21$.
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