Vidaara.orgClass 7 · Mathematics
CodeVID-M07-03-NEG-01
Negative Bases & Order of Operations - 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.
$(-2)^2=$
- A.$-4$
- B.$4$
- C.$-2$
- D.$2$
2.
$(-2)^3=$
- A.$-8$
- B.$8$
- C.$-6$
- D.$6$
3.
A negative base with an even power is:
- A.negative
- B.positive
- C.zero
- D.undefined
4.
$-3^2=$
- A.$9$
- B.$-9$
- C.$6$
- D.$-6$
5.
In BODMAS, exponents come before:
- A.brackets
- B.addition
- C.nothing
- D.division only
Section B — Short Answer (2 marks)
4 × 2 = 8 marks
6.
Evaluate $(-3)^2$.
7.
Evaluate $(-2)^3$.
8.
Evaluate $-4^2$.
9.
Evaluate $(-1)^5$.
Section C — Short Answer (3 marks)
4 × 3 = 12 marks
10.
Evaluate $2+3\times4$.
11.
Evaluate $(2+3)^2$.
12.
Evaluate $10-2^3$.
13.
Evaluate $(-2)^2+(-3)^2$.
Section D — Long Answer (5 marks)
2 × 5 = 10 marks
14.
Evaluate $3+2\times(5-1)^2$ using the order of operations.
15.
Evaluate $(-2)^3+(-3)^2-(-1)^4$.
Answer Key
Section A — Multiple Choice Questions
- (B) $4$
- (A) $-8$
- (B) positive
- (B) $-9$
- (B) addition
Section B — Short Answer (2 marks)
- $9$.
- $-8$.
- $-16$.
- $-1$.
Section C — Short Answer (3 marks)
- $14$.
- $25$.
- $2$.
- $13$.
Section D — Long Answer (5 marks)
- $35$.
- $0$.
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