Question

1. Find ratio of 60 paise to Rs.9


(a) It is 15:1 (b) It is 1:15 (c) It is 1:5 (d) It is 5:1



2. Write down the additive inverse of

$\frac{ - 4}{9}$

(a) None of these

$(b) \: \frac{9}{4}$
$(c) \: \frac{4}{9}$
$(d) \: \frac{ - 5}{9}$


3. Diameter of circular garden is 9.8 m. Find its area.


(a) None of these (b) 55.46cm²

(c) 25.46cm² (d) 75.46cm²



4. What must be added to 3x+y to get 2x + 3y ?


(a) -x + 2y (b) x + 2y (c) 3x - 2y (d) x - 2y



5. Express in exponential for b x b x b x b


(a) None of these (b) b⁴
(c) b³

(d) b²



6. Cuboid is an example of


(a) 2-D shape (b) None of these (c) 3D- shape (d) Both



7. The diameter of a circle is


(a) None of these (b) 2r (c) r²

(d) 2r



8. Two cubes of dimensions 5 cm x 5 cm x 5 cm are placed side, the length of
resulting Cuboid is


(a) 10 (b) 15 (c) 5 (d) 7​

Answer 1

Answer:

8 one answer is B) 15 because 5×5×5=15cm

Answer 2

Solution 1) :-

→ 60 paise : Rs.9

→ 60 paise : 9 * 100 paise

→ 60 : 900

→ 6 : 90

→ 1 : 15 (b) (Ans.)

Solution 2) :-

→ Additive inverse of (-4/9) = (4/9) (c) (Ans.)

Solution 3) :-

→ Radius of circular garden = 9.8/2 = 4.9 m.

→ Area = πr² = (22/7) * 4.9 * 4.9 = 22 * 0.7 * 4.9 = 75.46 m². (d) (Ans.)

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