Page 362 - Start Up Mathematics_8 (Non CCE)

Section C

3. Fill in the blanks: 1 M × 5 = 5 M
(a) The HCF of 5x y , 20x y and 25x y is __________.
5 4
3 3
4 2
(b) Polynomials with two variables are called __________ polynomials.
1
(c) The value of x in the equation = 4 is __________.
x –1
(d) Time is __________ proportional to work.

1
(e) of 1,206 is equal to __________% of 134.
3
Section D

4. Give one word or sentence for the following: 1 M × 5 = 5 M

7
(a) Express as a percentage.
12
(b) What is the constant of variation in 6 , 15 16 and 20 ?
,
12 30 32 40
-7
(c) Is the solution of 2(x – 2) = 3(2x + 1)?
4
(d) How will you categorize polynomials on the basis of their degree?
(e) What are the factors of x + 6x – 16?
2
Section E

5. Factorize 2x y – 6x y + 4x y . 2 M
4 4
3 5
2 6
6. The product of two consecutive numbers is greater than the square of the smaller by 30.
Find the numbers. 3 M
Project Work

Logical Reasoning

The given figure shows eight matchsticks arranged in the shape of a fish that faces right. How can
three matchsticks be moved so that the fish now faces left?

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