Class-7 Half Yearly Examination - 1
Section - A, Attempt all the questions from this section
1. [3 + 3 + 4]
a) The temperature of a city falls by 10°C, then rises by 12°C and again falls by 5°C. If the initial temperature was 25°C, then what will be the final temperature?
b) Simplify: (3a2 + 2b2 + 2ab) − (2a2 + b2 − 2ab)
c) One teacher had 54 chocolates with. She gave two thirds of these to girls and one sixth to boys. How many chocolates were left with her?
2. [3 + 3 + 4]
a) Simplify: 35⁄6 + 71⁄9
b) Two angles are supplementary. One of them is 60° more than the other, find both the angles.
c) A train covers a distance of 353.6 km in 3.2 hours. What is the distance covered by the train in 1 hour?
Section - B, Attempt any two questions from this section
3. [3 + 3 + 4]
a) Find the value of p, if (5⁄6)p = 125⁄216.
b) Find the value of: {−(−5)3 × (−1)81}
c) Write each of the sets in ROSTER forms and also write their cardinal numbers :
P = {letters of the word EXAMINATION} and Q = {x | x = 2n + 1, n < 5, n ∈ N}
4. [3 + 3 + 4]
a) Simplify: 4 + 3⁄5 [{−10 × ( 55 − |16 − 3|)} ÷ (−6)]
b) The product of two rational numbers is 8⁄9. If one of the numbers is -4⁄15, find the other number.
c) From the sum of 3a2 − 5a + 2 and 5a2 − 8a + 9 subtract 4a2 − 5a + 9.
5. [3 + 3 + 4]
a) Find x in the given figure:
b) Simplify: (8-1 × 3-1) ÷ 6-1.
c)
i) Is it possible to have a triangle with angles 110°, 50°, 10°? If not, why?
ii) What should be added to -8⁄9 to get 4⁄9?
If you want to download the above Sample question, please click below link.
Half Yearly Examination - 1Download the pdf
Half Yearly Examination AnswerDownload the pdf
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