7th Standard Syllabus & Materials
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Published on: 16/06/2021
QB365 provides detailed and simple solution for every book back questions in class 7 Maths subject.It will helps to get more idea about question pattern in every book back questions with solution.
Download Tamil Nadu 7th Standard Maths question papers, model tests, one-mark questions, important questions, and public exam papers in PDF format. Free study materials and answer keys for TN State Board students.
Questions + Answers key
Take MCQ Maths Test1.
A postman can sort out 738 letters in 6 hours. How many letters can be sorted in 9 hours?
2.
The shadow of a pole with the height of 8 m is 6m. If the shadow of another pole measured at the same time is 30m, find the height of the pole?
3.
A birthday party is arranged in third floor of a hotel. 120 people take 8 trips in a lift to go to the party hall. If 12 trips were made how many people would have attended the party?
4.
A group of 21 students paid Rs. 840 as the entry fee for a magic show. How many students entered the magic show if the total amount paid was Rs.1,680?
5.
A dozen bananas costs Rs.20. What is the price of 48 bananas?
1.
| Number of letters | 738 | x |
| Shortout time (in hours) | 6 | 9 |
Since the given data are in direct proportion.
\(\frac{738}{6}=\frac{x}{9}\)
6x = 738 x 9
\(x=\frac{738 \times 9}{6}=1107\)
1107 letters can be sorted in 9 hours.
2.
| Height of the pole (m) | 8 | x |
| Height of the shadows (m) | 6 | 30 |
Since the given data are in direct proportion,
\(\frac{x_{1}}{y_{1}}=\frac{x_{2}}{y_{2}}
\)
\(\frac{8}{6}=\frac{x}{30}
\)
6x = 8 x 30
\(\therefore x=\frac{8 \times 30}{6}\)
x = 40 m
If the height of the shadow is 30 m height, then the height of the pole is 40 m.
3.
| Number of trips | 8 | 12 |
| Number of people | 120 | x |
Since the given data are in direct proportion
\(\frac{x_{1}}{y_{1}}=\frac{x_{2}}{y_{2}}\)
\(\frac{8}{120}=\frac{12}{x}\)
8x = 120 x 12
\(\therefore x=\frac{120 \times 12}{8}=180\)
In 12 trips, 180 people would have attended the party.
4.
Rs. 840 paid for 21 students.
Rs. 1680 (double of its amount) paid for 42 students (double the students).
5.
One dozon banana cost = Rs. 20
i.e.,12 bananas cost = Rs. 20
I banana cost \(=Rs\ \frac{20}{12} \)
48 bananas cost \(=\frac{20}{12} \times 48 \)
= Rs. 80
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Tamilnadu Stateboard 7th Standard Subjects
Tamilnadu Stateboard Standards
