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Write About it Shashi used addition to s...

Write About it Shashi used addition to solve a word problem about the weekly cost of commuting by toll tax for 15 each day. Ravi solved the same problem by multiplying. They both got the correct answer. How is this possible?

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NCERT EXEMPLAR-ALGEBRAIC EXPRESSIONS-Exercise
  1. Find the perimeter of the figure given below:

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  2. In a rectangular plot, 5 square flower beds of side (x+2) metres each ...

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  3. A wire is (7x - 3) metres long. A length of (3x - 4) metres is cut for...

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  4. A wire is (7x - 3) metres long. A length of (3x - 4) metres is cut for...

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  5. Rohan's mother gave him 3xy^2 and his father gave him 5(xy^2 +2). Out ...

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  6. A triangle is made up of 2 red sticks and 1 blue sticks length of a...

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  7. The sum of first n natural numbers is given 1/2 n^2 +1/2n. Find (i...

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  8. The sum of squares of first n natural numbers is given by 1/6 n (n+1)(...

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  9. The sum of the multiplication table of natural number 'n' is given by ...

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  10. Translate each of the following algebraic expressions into words 4b-...

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  11. 8(m+5)

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  12. Solve the equation, 7/(8-x)=2/3

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  13. Solve the equation, 17/(w+3)=16/(w+1)

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  14. Write the algebraic expression for the word phrase " 1/4 of the sum of...

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  15. What's the Error? A student wrote an algebraic expression for “5 less ...

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  16. Write About it Shashi used addition to solve a word problem about the ...

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  17. Write an expression for the sum of 1 and twice a number n. If you let ...

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  18. Will the value of 11x for x = -5 be greater than 11 or less than 11? E...

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  19. Match Column I with Column II in the following:

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  20. Express the following properties with variables x, y and z. (i) Comm...

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