#### Term 1 Model Questions

7th Standard EM

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Maths

Time : 01:30:00 Hrs
Total Marks : 60
5 x 1 = 5
1. Identify the problem with negative numbers as its answer:

(a)

-9+(-5)+6

(b)

8+(-12)-6

(c)

-4+2+10

(d)

10+9-4)+8

2. (-2)×−(-9)=_____

(a)

108

(b)

-108

(c)

+1

(d)

-1

3. The numerical co-efficient of −7mn is

(a)

7

(b)

-7

(c)

p

(d)

-p

4. If Mani buys 5kg of potatoes for Rs.75 then he can buy ______kg of potatoes for Rs.105.

(a)

6

(b)

7

(c)

8

(d)

5

5. The sum of all angles at a point is

(a)

360°

(b)

180°

(c)

90°

(d)

6. 5 x 1 = 5
7. ____$\times$ 75=0

()

0

8. The addition of −7b and 2b is __________

()

–5b

9. If a = 5, the value of 2a + 5 is _____

()

15

10. A car travels 60 km with 3 liters of petrol. If the car has to cover the distance of 200 km, it requires _______ liters of petrol.

()

10 litres

11. Draw a tetromino which passes symmetry ...................

()

12. 5 x 1 = 5
13. (-45)-(-8)=(-8)-(-45)

(a) True
(b) False
14. The sum of two integers can never be zero

(a) True
(b) False
15. The co-efficient of ab in the term 15abc is 15.

(a) True
(b) False
16. If x is a natural number, then x + 1 is its predecessor.

(a) True
(b) False
17. Number of students in a hostel and consumption of food are not in direct proportion.

(a) True
(b) False
18. 5 x 1 = 5
19. For any two integers 72 and 108, 72+108 is an also an integer

20. (1)

21. 0 + (−138) = (−138) = (−138)+0

22. (2)

23. 1 × (-1098) = (–1098) = (–1098) × 1

24. (3)

25. (4)

26. (5)

Multiplicative identity

5 x 2 = 10
(i) 8 and –12 using number line
(ii) (–3) and (–5) using number line
(iii) (-100+(-10)
(iv) 20+(-72)
(V) 82+(-75)
(VI) -48+(-15)
(VII) -225+(-63)

28. If P=-15 and Q=5 find (P-Q)+(P+Q)

29. The price of an item x increases by Rs. 10 every year and an item y decreases by Rs. 15 every year. If in 2018, the price of x is Rs. 50 and y is Rs. 90, then which item will be costlier in the year 2020.

30. The area of a rhombus is 100 sq. cm and length of one of its diagonals is 8 cm. Find the length of the other diagonal

31. If x = 2 and y = 3, then find the value of the following expressions
(i) 2x − 3y
(ii) x + y
(iii) 4y − x
(iv) x + 1 − y

32. 5 x 3 = 15
33. Add: (i) (–70) and (–12) (ii) 103 and 39.

34. A parallelogram has adjacent sides 12 cm and 9 cm. If the distance between its shorter sides is 8 cm, find the distance between its longer side

35. If x = 3, y = 2 find the value of
(i) 4x + 7y
(ii) 3x + 2y − 5
(iii) x − y

36. If $\angle$POQ = 23° and $\angle$POR = 62° then find $\angle$QOR

37. A telephone exchange worker wants to give the telephone connection to Amutha's house. Shows all the possibilities of cable connections. Find the route which requires minimum cable?

38. 3 x 5 = 15
39. Find the value of :(i) (-11) - (-33)  (ii) (-90)-(-50)

40. Simplify:100x + 99y – 98z + 10x + 10y + 10z – x – y + z

41. Construct bisector of the ∠ABC with the measure 80°.