Ncert -Class 8 -Maths -Worksheet- Questions -SET A

Single Correct Type Questions

  1. Which of the following number is a perfect square?
    (A) 1046 (B) 259
    (C) 149 (D) 196
  2. Which of the following number is not a perfect
    square?
    (A) 256 (B) 169
    (C) 734 (D) 625
  3. Which of the following digit is not the last digit of a
    perfect square?
    (A) 2 (B) 1
    (C) 4 (D) 9
  4. Sum of first 4 odd numbers is a square of
    (A) 2 (B) 3
    (C) 4 (D) 5
  5. How many zeros are there in the square of a number
    230?
    (A) 1 (B) 5
    (C) 4 (D) 2

Multi Correct Type Questions

  1. Which of the following digits are last digits of square
    numbers?
    (A) 1 (B) 2
    (C) 3 (D) 4
  2. Which of the following digits are not the last digits
    of square number?
    (A) 1 (B) 2
    (C) 3 (D) 4
  3. 1 + 3 + 5 + 7 + 9 + 11 + 13 + 15 is
    (A) Even number square (B) Odd number
    square
    (C) 82 (D) 92
  4. Which of the following is not a perfect square?
    • (A) 6300 (B) 125000
    • (C) 160 (D) 1600

Case Based Questions:


Answer the following questions based on the data given below.
If a, b, c, d, e . . . . . z are the consecutive odd
integers.

  1. If a = 1, then sum of all letters is
    (A) 202
    (B) 512
    (C) 262
    (D) 132
  2. If a = 3, then sum of all letters is
    (A) A perfect square (B) Not a perfect square
    (C) 262
    – 1 (D) 272
    – 1
  3. a + b + c + d + e + f + g + h + i is
    (A) 102
    (B) 82
    (C) 182
    (D) 92

Assertion & Reason Type Questions


In the following questions, a statement of Assertion(A) is followed by a statement of Reason(R).
Mark the correct choice one among the following:
(A) Both assertion and reason are true and reason
is the correct explanation of assertion.
(B) Both assertion and reason are true but reason
is not the correct explanation of assertion.
(C) Assertion is true but reason is false.
(D) Both assertion and reason are false.

  1. Assertion(A): 1 + 3 + 5 + 7 = 42
    Reason(R): Sum of first ‘n’ odd integers is n2
  2. Assertion(A): Unit digit of 272 is odd integer.
    Reason(R): Unit digit of even number square is always even.

DESCRIPTIVE QUESTION

1. If sum of 27 consecutive odd integers is 272 then find the highest odd integer?

2. If sum of first 13 odd integers is 152– x, then find the ‘x’ value?

3. One number in pythagoron’s triplet is 12, find the triplet.

4. Write any four consecutive triangle numbers. Find the sum of any two consecutive triangular numbers.
What do you notice?

Pages: 1 2 3 4

Leave a Reply