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$(0.89345\times 1000)+8.9345-893.45=$

Solve the following:

(a) The teacher tells the class that the highest marks obtained by a student in her class is twice the lowest marks plus $7$. The highest score is $87$. What is the lowest score?

(b) In an isosceles triangle, the base angles are equal. The vertex angle is $40°$. What are the base angles of the triangle? (Remember, the sum of three angles of a triangle is $180°$).

(c) Sachin scored twice as many runs as Rahul. Together, their runs fell two short of a double century. How many runs did each one score?

Identify the thing that is common to all these images.

Total number of students in 4 different schools and percentage of students participating in Dance and play in 4 different classes:
Q. What is the average of students in Play from all the classes?

What is the area of a circle with radius r?

Match the multiplication equations which have the same answer.

Write the decimal number represented by the points A, B, C, D on the given number line.

Evaluate each of the following: $\left(i\right)\frac{2}{3}-\frac{3}{5}\left(ii\right)\frac{-4}{7}-\frac{2}{-3}\left(iii\right)\frac{4}{7}-\frac{-5}{-7}\left(iv\right)-2-\frac{5}{9}\left(v\right)\frac{-3}{-8}-\frac{-2}{7}\left(vi\right)\frac{-4}{13}-\frac{-5}{26}\left(vii\right)\frac{-5}{14}-\frac{-2}{7}\left(viii\right)\frac{13}{15}-\frac{12}{25}\left(ix\right)\frac{-6}{13}-\frac{-7}{13}\left(x\right)\frac{7}{24}-\frac{19}{36}\left(xi\right)\frac{5}{63}-\frac{-8}{21}$

1. 9

The hypotenuse of a right angled triangle is 25 cm. One of its leg is 7 cm. What is the length of the other side ?

Find the value of ‘a’ in the following proportion.

Question 1 (c)

Write all the factors of the given number:
21

The number of two digit numbers n such that the difference of n and the number formed by reversing the digits of n, is prime, is

625*(-35)+(-625)*65

Please send the answer with proper method

Solution of the inequality $x+5>15,$ is:

Question 4(a)

Determine if the following ratios form a proportion. Also, write the middle terms and extreme terms where the ratios form a proportion:

25 cm : 1 m and Rs. 40 : Rs. 160

Sohan bought a second-hand refrigerator for ₹ 2500 and spent ₹ 1500 on repairs. He then sold it for ₹ 3300. What is the gain or loss%?

Find the product, using suitable properties:

(a) $26\times (-48)+(-48)\times (-36)$

(b) $8\times 53\times (-125)$

(c) $15\times (-25)\times (-4)\times (-10)$

(d) $(-41)\times 102$

(e) $625\times (-35)+(-625)\times 65$

(f) $7\times (50-2)$

(g) $(-17)\times (-29)$

(h) $(-57)\times (-19)+57$

Rina and Tina went to the market to buy half a dozen apples and two chocolates. What is the amount (in ₹) they spent if each apple costs ₹$x$ and each chocolate costs ₹$y$?

Question 1 (iii)

State whether the following statement is true or false. Justify your answer.

Every real number is an irrational number.

An elevator descends into a mine shaft at the rate of 15m/min. If the descend starts from 10 m above the ground level, how long will it take to reach -140 m.

Choose the angles which can be constructed with the help of a ruler and compass.

In a class of 25 students, there are 15 boys. What is the percentage of girls in this class?

The sum of two positive integers is ______.

What should be multiplied to 22.47 to get 2247 ?

An angle is 20 more than its complement find the measure of it?

Rohan’s mother gave him $₹3x{y}^2$ and his father gave him $₹5(x{y}^2+2)$. Out of this total money he spent $₹(10–3x{y}^2)$ on his birthday party. How much money is left with him?

The teacher then got a call from a courier person regarding some delivery and he went to pick it up. Meanwhile, one of your classmates stood up holding an A4 size drawing sheet and said, "it is a 2-dimensional object and its shape is a __________”.

After answering the question, you all urged your teacher to open the box and you saw that they were grafitti color sprays.

You all were excited to use those sprays and paint the wall but before that, the teacher held one of the bottles and asked the shape of the bottle.

A number is divided into two parts, such that one part is 10 more than the other. If the two parts are in the ratio 5 : 3, find the number and the two parts.

Look at the small triangle. What part of the square is it?

Word problem: lf our salary is ₹10,000 and the expenses are 3/4 of the salary, how much are savings?