Page 59 - Maths Skill - 6

Number Play 57

3. Fill the table below with only 3-digit numbers such that the super cells are exactly the coloured cells.

346 125 989
4. Identify the numbers marked on the number lines below and label the remaining positions. And put a
circle around the smallest number and a box around the largest number in each of the sequences above.
(a)
7897 7899
(b)
6325 6375
(c)
2610 2615

(d)
2312 2316 2322

(e)
9071 9074 9092

PLAYING WITH DIGITS
We know that there are 9, one digit number just given as 1, 2, 3, 4, 5, 6, 7, 8, 9
here, 9 is the biggest number and 1 is the Smallest Number.
If we talk about the two digit numbers, that are

10, 11, 12 _________ 99
i.e. Biggest two digit number = 99
and smallest two digit number = 10

then total two digits number = 99 – 10 + 1 = 90
If we talk about the three digit numbers, that are
100, 101, 102 _________ 999
here, the biggest three digit number = 999
and the smallest three digit number = 100

then total three digits number = 999 – 100 + 1 = 900
If we talk about the four digits number, that are
1000, 1001, 1002 _________ 9999

here, the biggest four digit number = 9999
and the smallest number = 1000
then total four digits numbers = 9999 – 1000 + 1 = 9000
If we talk about the five digit numbers, that are
10000, 10001 _________ 99999

here, the biggest five digit number = 99999
and the smallest five digit number = 10000
then, total five digits number = 99999 – 10000 + 1 = 90000

Now the formula governs the above concept
Total ‘x’ digits number = Biggest number of ‘x’ digit – smallest number of ‘x’ digit + 1