**7th grade math worksheet 13 :**

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 :**

What is the square root of 196?

(A) 14 (B) 19 (C) 12

**Question 2 :**

A play ground is 100 m long and 70 m wide. How much distance does a girl run when she runs 5 times around the playground?

(A) 2500 m (B) 2300 m (C) 1700 m

**Question 3 :**

From a rectangular sheet of tin, of size 100 cm by 80 cm, are cut four squares of side 10 cm from each corner. Find the area of the remaining sheet.

(A) 2400 cm^{2} (B) 3600 cm^{2} (C) 7600 cm^{2}

**Question 4 :**

If x = 2, y = 3 and z =-2 then find the value of 6x-7y + 4z

(A) 12 (B) -17 (C) -10

**Question 5 :**

Find the value of "x" in 4^{4x-7} = 4 ^{x-1}

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

**Question 6 :**

Expand (x + 5y)^{2}

(A) x^{2} + 10 xy + 25y^{2 }

^{ }(B) x^{2} - 10 xy - 25y^{2 }

(C) x^{2} + 10 xy - 25y^{2}

**Question 7 :**

On selling a clock for $240, a trader loses 4 %. In order to gain 10 %, he must sell the clock for

(A) $275 (B) $295 (C) $365

**Question 8 :**

Find the remainder when 8x^{3} - 12 x^{2} + 6x +15 divided by 2x-3.

(A) 20 (B) 24 (C) 10

**Question 9 :**

The difference of two numbers is 72 and quotient obtained by dividing the one by other is 3. Find the numbers.

(A) 25, 97 (B) 15, 87 (C) 36, 108

**Question 10 :**

In triangle ABC, DE parallel to EC find AC when AB = 15 cm, AD = 10 cm and AE = 8 cm

(A) 8 cm (B) 4 cm (C) 2 cm

Answers

(1) 14

(2) 1700 m

(3) 7600 cm^{2}

(4) -27

(5) 2

(6) x^{2} + 10x + 25y^{2}

(7) $275

(8) 24

(9) 36 and 108

(10) 4 cm

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