NCERT class 7 mathematics chapter 11 – “Exponents and Powers” teaches us that exponents make large numbers easy to read, understand, and compare. For the CBSE exams, practice multiple-choice questions (MCQs) to prepare for the objective questions. We have provided Class 7 MCQ Questions on “Exponents and Powers” paired with comprehensive explanations. CBSE is emphasizing the role of MCQs as they assist in understanding the concepts completely.
As compared to subjective questions, MCQs are very different so practicing and understanding how to get appropriate answers in MCQs is very essential. To revise the main concepts, students should practice all the MCQs with the answers given. This will also help them familiarize themselves with the kinds of questions that might appear in the board exams.
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Topics covered in “Exponents and Powers”
- Laws of Exponents
- Multiplying Powers with the Same Base
- Dividing Power with the Same Base
- Taking Power of a Power
- Multiplying Powers with the Same Exponents
- Dividing Powers with the Same Exponents
- Numbers with exponent zero
- Decimal Number System
- Expressing Large Numbers in the Standard form
CBSE Class 7 Mathematics Exponents and Powers MCQs – PDF Download
Answers –
Summary for NCERT class 7 mathematics chapter 11 – “Exponents and Powers”
- Very large numbers are difficult to read, understand, compare and operate upon. To make all these easier, we use exponents, converting many of the large numbers in a shorter form.
- The following are exponential forms of some numbers.
10,000 = 104 (read as 10 raised to 4) 243 = 35 , 128 = 27
Here, 10, 3 and 2 are the bases, whereas 4, 5 and 7 are their respective exponents. We also say, 10,000 is the 4th power of 10, 243 is the 5th power of 3, etc.
- Numbers in exponential form obey certain laws, which are:
For any non-zero integers a and b and whole numbers m and n,
- am × an = am+n
- am ÷ an = am-n
- (am)n = amn
- am× bm = (ab)m
- a0= 1
- (–1)even = 1
- (–1)odd = -1
Best Reference Books for Class 7 Mathematics
- NCERT Textbook + Exemplar Problems Solutions Mathematics
- NCERT at your Fingertips Mathematics
- Foundation Course Mathematics
- Practice-cum-Workbook Mathematics
- Integrated Learning Mathematics
