Question

A. Try to guess the answers for the following questions.

1.When 13 is added to a number we get 31.What is the number ?

2.When 17 is subtracted from a number we get 17.What is the number ?

3.Twice a number gives 62,What is the number ?

4.Half of a number is 12.What is the number ?

5.one and half times a number is 90.What is the number ?

1 Complete the table

Language Maths language

4 more than a number is 10 X + 4 = 10

................................................................

X – 6 = 10

3 added to two times a number is 23

............................

..................................................................

3x- 10 = 50

Half of a number is 20 ................................

2) Sum of three consecutive natural numbers is 30. Find the numbers

First number = x

Second number = x+1

Third number =

Sum = x + x+1 + = 30

3x + = 30

3x = 30 - =

X = ÷ 3 =



Numbers are :-....,.....,.....

3)If the sum of three consecutive natural number is 36 ,what are the numbers?

The first number = x

Second number = ----

Third number = ---

x + (x +1) + (x +2) = 36

3x + ---- = 36

X = ......

Numbers.................​

Answer 1

A

1. 18

2. 0

3. 31

4. 24

5. 60