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Class 6 Maths Worksheet: Algebra

Maths worksheets lesson 44: Algebra: expressions and simple equations · Set 66 · 40 sums
TalentJR

The method (Keep the balance): 3x means 3 × x. "5 more" → + 5, "5 fewer" → − 5, "5 times" → 5n, "shared among 5" → n ÷ 5. Value of an expression: put the number in place of the letter, then work it out — 3x + 5 when x = 4 is 12 + 5 = 17. Solve x + a = b by taking a from both sides; x − a = b by adding a; ax = b by dividing by a; x ÷ a = b by multiplying by a. Check by putting your answer back into the equation.

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  1. 1.Solve: n − 4 = 12. What is n?
  2. 2.Find the value of 3a + 8b when a = 7 and b = 2.
  3. 3.Find the value of 3a + 4b when a = 6 and b = 5.
  4. 4.Find the value of 6a + 8b when a = 1 and b = 4.
  5. 5.Each matchstick letter L needs 2 sticks, so n letters need 2n sticks. How many sticks are needed for 24 letters?
  6. 6.Find the value of 8p + 5 when p = 2.
  7. 7.Each matchstick letter T needs 2 sticks, so n letters need 2n sticks. How many sticks are needed for 8 letters?
  8. 8.Find the value of 7a + 2b when a = 1 and b = 9.
  9. 9.Solve: n ÷ 7 = 16. What is n?
  10. 10.Solve: x ÷ 3 = 12. What is x?
  11. 11.Find the value of 4x + 3 when x = 3.
  12. 12.Each matchstick letter L needs 2 sticks, so n letters need 2n sticks. How many sticks are needed for 5 letters?
  13. 13.Solve: t + 8 = 24. What is t?
  14. 14.Find the value of 8a + 3b when a = 7 and b = 6.
  15. 15.Find the value of 5a + 7b when a = 7 and b = 4.
  16. 16.Find the value of 2t − 12 when t = 8.
  17. 17.Lakshmi shares m balls equally among 5 friends. Which expression shows how many balls each friend gets? (a) 5m (b) m ÷ 5 (c) m − 5 (d) m + 5
  18. 18.Each matchstick letter U needs 3 sticks, so n letters need 3n sticks. How many sticks are needed for 25 letters?
  19. 19.Tara has p pencils. A friend has 6 times as many. Which expression shows how many pencils the friend has? (a) p ÷ 6 (b) 6p (c) p + 6 (d) p − 6
  20. 20.Solve: 3m = 39. What is m?
  21. 21.Aarav has m balls. A friend has 9 more. Which expression shows how many balls the friend has? (a) m − 9 (b) m ÷ 9 (c) 9m (d) m + 9
  22. 22.Each matchstick letter C needs 3 sticks, so n letters need 3n sticks. How many sticks are needed for 22 letters?
  23. 23.Solve: n − 11 = 7. What is n?
  24. 24.Find the value of 3a + 3b when a = 2 and b = 4.
  25. 25.Solve: t + 12 = 17. What is t?
  26. 26.Manav shares n laddoos equally among 5 friends. Which expression shows how many laddoos each friend gets? (a) n − 5 (b) n + 5 (c) 5n (d) n ÷ 5
  27. 27.Find the value of 8x − 6 when x = 1.
  28. 28.Each matchstick letter T needs 2 sticks, so n letters need 2n sticks. How many sticks are needed for 20 letters?
  29. 29.Solve: m ÷ 12 = 10. What is m?
  30. 30.Solve: p ÷ 4 = 6. What is p?
  31. 31.Riya has k balloons. A friend has 7 more. Which expression shows how many balloons the friend has? (a) k ÷ 7 (b) 7k (c) k + 7 (d) k − 7
  32. 32.Find the value of 9a + 3b when a = 3 and b = 8.
  33. 33.Solve: x − 2 = 8. What is x?
  34. 34.Kavya has n kites. A friend has 9 fewer. Which expression shows how many kites the friend has? (a) n − 9 (b) 9n (c) n ÷ 9 (d) n + 9
  35. 35.Solve: x + 10 = 28. What is x?
  36. 36.Karan has m flowers. A friend has 3 times as many. Which expression shows how many flowers the friend has? (a) m ÷ 3 (b) m − 3 (c) 3m (d) m + 3
  37. 37.Find the value of 5a + 5b when a = 7 and b = 10.
  38. 38.Find the value of 3a + 2b when a = 7 and b = 1.
  39. 39.Isha has m bananas. A friend has 4 fewer. Which expression shows how many bananas the friend has? (a) m ÷ 4 (b) m − 4 (c) 4m (d) m + 4
  40. 40.Aditya has p balls. A friend has 9 times as many. Which expression shows how many balls the friend has? (a) 9p (b) p − 9 (c) p + 9 (d) p ÷ 9

Answer key

  1. 16
  2. 37
  3. 38
  4. 38
  5. 48
  6. 21
  7. 16
  8. 25
  9. 112
  10. 36
  11. 15
  12. 10
  13. 16
  14. 74
  15. 63
  16. 4
  17. m ÷ 5
  18. 75
  19. 6p
  20. 13
  21. m + 9
  22. 66
  23. 18
  24. 18
  25. 5
  26. n ÷ 5
  27. 2
  28. 40
  29. 120
  30. 24
  31. k + 7
  32. 51
  33. 10
  34. n − 9
  35. 18
  36. 3m
  37. 85
  38. 23
  39. m − 4
  40. 9p

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