Word Problems on the basic operations : Example Questions with Answers, Solution

**Word Problems
on the basic operations**

** **

**Example 1.16**

The
sum of two rational numbers is 4/5 . If one number is 2/15, then find the other.** **

**Solution:**

Let the other
number be *x.*

** **

**Example 1.17**

The
product of two rational numbers is −2/3, If one number is 3/7, then find the other.

**Solution:**

Let
the other number be *x.*

** **

**Example 1.18**

One
roll of ribbon is 18 3/4 m long. Sankari has four full rolls and one–third of another
roll. How many metres of ribbon does Sankari have in total?

**Solution:**

Number of
metres of ribbon Sankari has in total

** **

**Example 1.19**

Find the rational numbers that should be added and subtracted so that they will make the sum to the nearest whole number.

**Solution:**

which lies
between the whole numbers 7 and 8.

If we subtract
5/8 from 7 5/8 , it becomes 7. If we add 3/8 to 7 5/8, it becomes 7+ 5/8 + 3/8 =
7+1=8.

** **

**Example 1.20**

A student
instead of multiplying a number by 8/9, by mistake divided it by 8/9 . If the difference
between the correct answer and the answer got by him is 34, then find the number.

**Solution:**

Let the number
be *x* .

The student
had to find 8*x*/9* *but, he had found

** **

**Example 1.21**

Tags : Numbers | Chapter 1 | 8th Maths , 8th Maths : Chapter 1 : Numbers

Study Material, Lecturing Notes, Assignment, Reference, Wiki description explanation, brief detail

8th Maths : Chapter 1 : Numbers : Word Problems on the basic operations | Numbers | Chapter 1 | 8th Maths

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