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7th CBSE
IMPORTANT
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Subtracting 3xy+5yz-7zx from 5xy-2zx+10xyz, we get

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Important Questions on Algebraic Expressions

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7th CBSE
IMPORTANT
Foundation Course Mathematics>Chapter 11 - Algebraic Expressions>EXERCISE>Q 9
The sum of -2xy and -5xy is equal to 
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7th CBSE
IMPORTANT
Foundation Course Mathematics>Chapter 11 - Algebraic Expressions>EXERCISE>Q 10
The sum of -a and -a2 subtracted from a3 gives
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7th CBSE
IMPORTANT
Foundation Course Mathematics>Chapter 11 - Algebraic Expressions>EXERCISE>Q 11
If the sides of a triangle are 3p, 4p-2 and 5p+1. Find the perimeter of the triangle.
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7th CBSE
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Foundation Course Mathematics>Chapter 11 - Algebraic Expressions>EXERCISE>Q 12
If the perimeter of a triangle is 8x-7 and the two sides are 3x+5 and 2x-3, find the third side. 
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7th CBSE
IMPORTANT
Foundation Course Mathematics>Chapter 11 - Algebraic Expressions>EXERCISE>Q 13
What should be added to -6y2+3x to get -3y2+5x ?
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7th CBSE
IMPORTANT
Foundation Course Mathematics>Chapter 11 - Algebraic Expressions>EXERCISE>Q 14
At present, the number of bacteria in a culture is x. It becomes 2 more than the twice of itself after one week. What will be its number after one week?
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7th CBSE
IMPORTANT
Foundation Course Mathematics>Chapter 11 - Algebraic Expressions>EXERCISE>Q 15
The area of a rectangle is given by the product of its length and breadth. The length of the rectangle is two-thirds of its breadth. Find its area if its breadth is x cm.
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7th CBSE
IMPORTANT
Foundation Course Mathematics>Chapter 11 - Algebraic Expressions>EXERCISE>Q 16
If there are x rows of chairs and each row contains 3x chairs. Determine the total number of chairs.