1. A number increased by 7 gives 15. What is the number?
- A8
- B7
- C22
- D9
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Answer: A) 8
Let the number be x. x + 7 = 15, so x = 15 - 7 = 8.
Class 7 Word Problems — practice questions with answers
Simple Equations · 5 sample questions from the school syllabus. Try each one, then open the answer and the worked solution.
2. The length of a rectangle is 5 m more than its width. If the width is w, which expression gives the length?
- Aw + 5
- Bw - 5
- C5w
- D5 - w
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Answer: A) w + 5
Length is 5 more than width w, so length = w + 5.
3. Solve: 'I am thinking of a number. If I add 9 to one-third of it, I get 14.' What is the number?
- A15
- B12
- C21
- D5
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Answer: A) 15
, , x = 15.
4. In a two-digit number, the tens digit is 3 and the units digit is u.
The value of the number is 38.
Form and solve the equation for u.
The value of the number is 38.
Form and solve the equation for u.
- A8
- B9
- C7
- D16
Show answer
Answer: A) 8
Value = 30 + u = 38, so u = 8.
5. A two-digit number has the units digit twice the tens digit.
The tens digit is t and the number's digit sum (tens + units) is 9.
Find the tens digit t.
The tens digit is t and the number's digit sum (tens + units) is 9.
Find the tens digit t.
- A4
- B3
- C2
- D6
Show answer
Answer: B) 3
Units = 2t. Digit sum: t + 2t = 9, 3t = 9, t = 3 (the number is 36).
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