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Class 6 Maths Worksheet: Algebra

Maths worksheets lesson 44: Algebra: expressions and simple equations · Set 112 · 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.Find the value of 4a + 3b when a = 1 and b = 6.
  2. 2.Find the value of 6a + 8b when a = 7 and b = 7.
  3. 3.Find the value of 7a + 3b when a = 3 and b = 10.
  4. 4.Find the value of 3a + 2b when a = 7 and b = 1.
  5. 5.Find the value of 2a + 2b when a = 1 and b = 8.
  6. 6.Each matchstick letter L needs 2 sticks, so n letters need 2n sticks. How many sticks are needed for 10 letters?
  7. 7.Find the value of 8p + 10 when p = 6.
  8. 8.Find the value of 2m + 1 when m = 12.
  9. 9.Solve: 5t = 30. What is t?
  10. 10.Each matchstick letter V needs 2 sticks, so n letters need 2n sticks. How many sticks are needed for 15 letters?
  11. 11.Find the value of 9a + 6b when a = 8 and b = 9.
  12. 12.Each matchstick letter V needs 2 sticks, so n letters need 2n sticks. How many sticks are needed for 7 letters?
  13. 13.Each matchstick letter L needs 2 sticks, so n letters need 2n sticks. How many sticks are needed for 27 letters?
  14. 14.Find the value of 3a + 7b when a = 5 and b = 9.
  15. 15.Each matchstick letter L needs 2 sticks, so n letters need 2n sticks. How many sticks are needed for 28 letters?
  16. 16.Find the value of 7x − 10 when x = 2.
  17. 17.Each matchstick letter F needs 3 sticks, so n letters need 3n sticks. How many sticks are needed for 23 letters?
  18. 18.Find the value of 3m − 16 when m = 6.
  19. 19.Find the value of 8m + 17 when m = 8.
  20. 20.Each matchstick letter F needs 3 sticks, so n letters need 3n sticks. How many sticks are needed for 13 letters?
  21. 21.Each matchstick letter C needs 3 sticks, so n letters need 3n sticks. How many sticks are needed for 30 letters?
  22. 22.Find the value of 3p + 4 when p = 6.
  23. 23.Find the value of 4a + 3b when a = 9 and b = 2.
  24. 24.Solve: t − 8 = 2. What is t?
  25. 25.Each matchstick letter C needs 3 sticks, so n letters need 3n sticks. How many sticks are needed for 21 letters?
  26. 26.Solve: n − 11 = 2. What is n?
  27. 27.Find the value of 5x + 20 when x = 6.
  28. 28.Find the value of 2n + 18 when n = 10.
  29. 29.Solve: 6p = 114. What is p?
  30. 30.Solve: y ÷ 7 = 10. What is y?
  31. 31.Each matchstick letter V needs 2 sticks, so n letters need 2n sticks. How many sticks are needed for 13 letters?
  32. 32.Find the value of 7y + 17 when y = 12.
  33. 33.Kabir shares k marbles equally among 8 friends. Which expression shows how many marbles each friend gets? (a) k − 8 (b) k ÷ 8 (c) 8k (d) k + 8
  34. 34.Pooja has m bananas. A friend has 4 times as many. Which expression shows how many bananas the friend has? (a) 4m (b) m ÷ 4 (c) m − 4 (d) m + 4
  35. 35.Joseph has n bananas. A friend has 7 more. Which expression shows how many bananas the friend has? (a) n ÷ 7 (b) n + 7 (c) n − 7 (d) 7n
  36. 36.Find the value of 5y − 17 when y = 6.
  37. 37.Find the value of 2a + 4b when a = 9 and b = 6.
  38. 38.Each matchstick letter L needs 2 sticks, so n letters need 2n sticks. How many sticks are needed for 30 letters?
  39. 39.Solve: x ÷ 4 = 16. What is x?
  40. 40.Each matchstick letter T needs 2 sticks, so n letters need 2n sticks. How many sticks are needed for 26 letters?

Answer key

  1. 22
  2. 98
  3. 51
  4. 23
  5. 18
  6. 20
  7. 58
  8. 25
  9. 6
  10. 30
  11. 126
  12. 14
  13. 54
  14. 78
  15. 56
  16. 4
  17. 69
  18. 2
  19. 81
  20. 39
  21. 90
  22. 22
  23. 42
  24. 10
  25. 63
  26. 13
  27. 50
  28. 38
  29. 19
  30. 70
  31. 26
  32. 101
  33. k ÷ 8
  34. 4m
  35. n + 7
  36. 13
  37. 42
  38. 60
  39. 64
  40. 52

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