Vidaara.orgClass 4 · Mathematics
CodeVID-M04-10-SHR-01
Shrinking Patterns - Assignment
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.
A shrinking pattern:
- A.increases
- B.decreases by a rule
- C.stays the same
- D.is random
2.
The rule of $20, 15, 10, 5$ is:
- A.subtract $5$
- B.add $5$
- C.divide by $2$
- D.subtract $10$
3.
The next term of $30, 25, 20$ is:
- A.$10$
- B.$15$
- C.$18$
- D.$5$
4.
The rule of $80, 40, 20, 10$ is:
- A.subtract $40$
- B.divide by $2$
- C.subtract $20$
- D.divide by $4$
5.
A pattern can shrink by subtracting or by:
- A.adding
- B.dividing
- C.multiplying
- D.rounding
Section B — Short Answer (2 marks)
4 × 2 = 8 marks
6.
Next term of $20, 15, 10$.
7.
Next term of $50, 40, 30$.
8.
Rule of $18, 15, 12, 9$.
9.
Next term of $100, 90, 80$.
Section C — Short Answer (3 marks)
4 × 3 = 12 marks
10.
Next two terms of $30, 25, 20, \ldots$
11.
Next term of $64, 32, 16$.
12.
Find the missing term: $40, 30, \rule{1em}{0.4pt}, 10$.
13.
The 5th term of $25, 20, 15, \ldots$
Section D — Long Answer (5 marks)
2 × 5 = 10 marks
14.
For $48, 42, 36, \ldots$, find the rule and the next three terms.
15.
A pattern halves each time: $96, 48, 24, \ldots$ Find the next three terms.
Answer Key
Section A — Multiple Choice Questions
- (B) decreases by a rule
- (A) subtract $5$
- (B) $15$
- (B) divide by $2$
- (B) dividing
Section B — Short Answer (2 marks)
- $5$.
- $20$.
- Subtract $3$.
- $70$.
Section C — Short Answer (3 marks)
- $15, 10$.
- $8$.
- $20$.
- $5$.
Section D — Long Answer (5 marks)
- Rule: subtract $6$; $30, 24, 18$.
- $12, 6, 3$.
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