Upload
cbecdm
View
14
Download
0
Embed Size (px)
DESCRIPTION
Work sheets for algebraic expressions for grade 7 students
Citation preview
Material downloaded from http://myCBSEguide.com and http://onlineteachers.co.in
Portal for CBSE Notes, Test Papers, Sample Papers, Tips and Tricks
CBSE Worksheet-59
CLASS –VII Mathematics (Perimeter and Area)
Choose correct option in questions 1 to 4.
1. If the area of the rectangle is 105 cm2. Its length is (4x – 5) cm and breadth is (2x – 5)
cm, find the perimeter?
a. 44 cm b. 55 cm
c. 33 cm d. 66 cm
2. What should be added to x2 + xy to obtain 5x2 - xy?
a. 5x2 – 2xy b. 4x2 – 2xy
c. 4x2 – 3xy d. 5x2 – 3xy
3. Get the algebraic expressions using variables, constants and arithmetic operations.
Product of numbers x and y subtracted from their 10
a. xy + 10 b. 10xy
c. xy – 10 d. 10/xy
4. Simplify: (5x – 2y) (5x + 2y).
a. 49x2 – 4y2 b. 25x2 – 9y2
c. 14x2 – 9y2 d. 25x2 – 4y2
Fill in the blanks:
5. Factors containing variables are said to be __________.
6. The ____________ is the numerical factor in the term.
7. Any expression with one or more terms is called a __________.
8. From the sum of 4 + 3x and 5 – 4x + 2x2, subtract the sum of 3x2 – 5x and –x2 + 2x + 5.
9. a. If z = 10, find the value of z3 – 3(z – 10).
b. If p = – 10, find the value of p2 – 2p – 100.
10. Find the value of the following expressions for a = 3, b = 2.
a. a2 + 2ab + b2
b. a3 – b3
11. Simplify the expressions and find the value if x is equal to 2.
a. x + 7 + 4 (x – 5)
b. 3 (x + 2) + 5x – 7
Material downloaded from http://myCBSEguide.com and http://onlineteachers.co.in
Portal for CBSE Notes, Test Papers, Sample Papers, Tips and Tricks
Answer key:
1. a
2. b
3. c
4. a
5. algebraic factors
6. coefficient
7. polynomial
8. 2x + 4
9. a. 1000
b. 20
10. a. 25
b. 19
11. a. 5x – 13; –3
b. 8x – 1; 15