Question

Mathematics for Class 7
118
3
2
TEST PAPER-7
A. 1. Evaluate x + y + z- 3xyz when x = -2, y = -1 and z = 3.
2. Write the coefficient of x in each of the following:
(1) -5xy
(11) 2xyz
(ill) --abx
3. Subtract x* - 2xy + 5y - 4 from 4 xy -5x? -y +6.
4. How much less is x? - 2xy + 3y than 2x - 3y + xy?
5. Find the product abe-35 a bºx(-8°c).
12
6. Simplify: (3a + 4)(2a - 3) + (5a - 4)(a + 2).
2
7x
7. Solve: 3x 2x
10 5 25 25
8. Solve: 0.5x + = 0.25x +7.
9. The sum of two consecutive odd numbers is 68. Find the numbers.
10. Reenu's father is thrice as old as Reenu. After 12 years he will be just twice b
Find their present ages.
B. Mark (/) against the correct answer in​

Answer 1

Answer:

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