**7th grade math worksheet 12 :**

Here we are going to see 10 practice questions of mixed topics. We have been preparing this set of questions in order to test how you understood the topics.

**Question 1 :**

The sum of the digits of a two digit number is 15 and if 9 is added to the number the digits are interchanged.Find the required number.

(A) 78 (B) 19 (C) 82

**Question 2 :**

Two trains with a speed of 35km per hour and 28 km per hour respectively,starting at the same time, run in the opposite directions between two stations A and B, 315 km apart.Find where they will meet

(A) 180 km apart from A

(B) 130 km apart from A

(C) 175 km apart from A

**Question 3 :**

The sum of two number is 135 and are in the ratio 4:5.Find the required numbers.

(A) 80,95 (B) 60,75 (C) 30,35

**Question 4 :**

The sum of two numbers is 3000. If 8% of one number is equal to 12% of the other, find the numbers.

(A) 1800 and 1200

(B) 2240 and 2800

(C) 2700 and 3100

**Question 5 :**

Solve the following 2(6x-5) = (3x+2) + 6

(A) 2 (B) 5 (C) 3

**Question 6 : **

A chord of length 16 cm is drawn in a circle of radius 10 cm. Find the distance of the chord from the centre of the circle.

(A) 30 cm (B) 25 cm (C) 12 cm

**Question 7 :**

In the figure, O is the center of the circle, <ABO = 30°, where A, B and C are points on the circle . What is the value of "x" ?

(A) 60° (B) 100° (C) 50°

**Question 8 :**

The base of the parallelogram is twice the height.If the area is 578 find the base and height.

(A) Height = 10 cm and Base = 20 cm

(B) Height = 17cm and Base = 34 cm

(C) Height = 15 cm and Base = 10 cm

**Question 9 :**

The perimeter of a triangle field is 144 m and the ratio of the sides is 3:4:5.Find the area of the field.

(A) 318 m^{2 }(B) 522 m^{2 }(C) 864 m^{ 2}

**Question 10 :**

The circumference of a circle exceeds the diameter by 20 cm. Find the radius of the circle.

(A) 42/3^{ }(B) 51/2^{ }(C) 55/2

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