alleryStart learning →What value does the expression 5m + 3 take when m = 2?
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- 16
- 10
- 13
Show answer and solution
Correct answer: D. 13
5m means 5 x m, so 5 x 2 + 3 = 13.
Olympiad (Class 7) Expressions Using Letter-Numbers — practice questions
Explore 45 free Expressions Using Letter-Numbers questions in Olympiad (Class 7) Mathematics. Open each question or exercise to read its content, reference answers and available explanation.
Practise Expressions Using Letter-Numbers with Quill →Expressions Using Letter-Numbers questions and exercises with answers
Showing questions 1–30 of 45.
What value does the expression 5m + 3 take when m = 2?Read the answer and worked solution →The expression 7k stands for 7 x k. Its value when k = 4 isRead the answer and worked solution →Shabnam is 3 years older than Aftab. If Aftab is 31, Shabnam isRead the answer and worked solution →Aftab is 3 years younger than Shabnam, who is 20. How old is Aftab?Read the answer and worked solution →Each L-shape needs 2 matchsticks. Sticks needed for n Ls?Read the answer and worked solution →A coconut costs ₹35 and 1 kg jaggery costs ₹60. Cost of c coconuts and j kg jaggery?Read the answer and worked solution →With coconuts at ₹35 each and jaggery at ₹60 per kg, 7 coconuts and 4 kg jaggery costRead the answer and worked solution →The sequence is the multiples of 4. Its 29th term isRead the answer and worked solution →By standard practice, 9 × y is written in short asRead the answer and worked solution →Letters such as a and s that stand for numbers are calledRead the answer and worked solution →The simplified form of l + b + l + b isRead the answer and worked solution →The perimeter of a rectangle is 2l + 2b. For l = 3 and b = 4 it isRead the answer and worked solution →Which pair consists of unlike terms?Read the answer and worked solution →A rectangle has sides v and (4 + 3) units. Its area isRead the answer and worked solution →A quiz round scores 7p - 3q. For p = 4 and q = 1 the score isRead the answer and worked solution →Rounds score 7p - 3q, 8p - 4q, 6p - 2q. With p = 4, q = 1, the total isRead the answer and worked solution →Simplify 9x - 4y - 5x + 6y.Read the answer and worked solution →Expand 2(3x + 4).Read the answer and worked solution →Remove the brackets: -(3a - 2b).Read the answer and worked solution →A pencil costs c and an eraser costs d. Cost of 5 pencils and 4 erasers?Read the answer and worked solution →Ravi is 5 years younger than Mona, whose age is m. Ravi's age isRead the answer and worked solution →Aftab is a years old and Shabnam is a + 3. Their ages added giveRead the answer and worked solution →A regular hexagon has side a. Its perimeter isRead the answer and worked solution →A 20 m pipe is joined to another pipe of k m. Total length?Read the answer and worked solution →Krithika has 6 bills of ₹100, 4 of ₹20 and z of ₹5. Total in rupees?Read the answer and worked solution →How many terms does 4a + 7b - 2c have?Read the answer and worked solution →Simplify 3x + (-7x).Read the answer and worked solution →Seven less than twice a number n is written asRead the answer and worked solution →The sum of a number x and its double isRead the answer and worked solution →The sum of integer n and the next integer n + 1 isRead the answer and worked solution →
Worked practice questions
The expression 7k stands for 7 x k. Its value when k = 4 is
- 47
- 11
- 74
- 28
Show answer and solution
Correct answer: D. 28
Writing 7k hides a multiplication sign, so the value is 7 x 4 = 28, not 74.
Shabnam is 3 years older than Aftab. If Aftab is 31, Shabnam is
- 37
- 31
- 28
- 34
Show answer and solution
Correct answer: D. 34
Her age is Aftab's age plus 3, so 31 + 3 = 34 years.
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