Question

MENTAL MATHS TEST

1)What is the product of the place value and the face value of 3 in 68324.
2)What are the three consecutive odd numbers preceding 8500?
3)How many 3 -digit numbers are there in all?
4)How many whole numbers
are there uptown 100?
5)Product of all even numbers between 3 & 7 is ........​

Answer 1

Step-by-step explanation:

Given that:-

1)Given number=68324

Place value of 3=300

Face value of 3=3

The product of them=300×3=900

2)The three consecutive odd numbers preceding 8500=8495,8497,8499

3)The three digit numbers=100,101,102,....999

First term(a)=100

Common difference=(d)=101-100=1

They are in the AP

Last term=an=999

=>an=a+(n-1)d=999

=>100+(n-1)(1)=999

=>100+n-1=999

=>n+99=999

=>n=999-99

=>n=900

Total 3 digit numbers =900

4)There are 100 whole numbers between 1 and 100

5)even numbers between 3 and 7=4,6

Their product =4×6=24