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E:\Working\Focus_Learning\Math_Genius_4_(25-10-2023)\Open_Files\Chap-01
\\December 6, 2023 1:30 PM Bharat Arora P-6 Reader _________________________ Date: ___________________74
Practice time 1d
1. Form the greatest and the smallest number using the following digits (only once).
digits greatest number Smallest number
(a) 2, 7, 3, 5, 1
(b) 7, 5, 4, 8, 0
(c) 9, 8, 3, 0, 2, 6
(d) 0, 1, 9, 6, 3, 7
2. Form the greatest and the smallest 5-digit numbers using the given digits with
repetition.
digits greatest 5-digit number Smallest 5-digit number
(a) 5, 8, 3, 4
(b) 6, 0, 7
(c) 2, 7, 8
(d) 9, 6, 0
(e) 5, 0
3. Form the greatest and the smallest 6-digit numbers using the given digits with
repetition.
digits greatest 6-digit number Smallest 6-digit number
(a) 1,9,7,5,0
(b) 2,4,6,8
(c) 3,7,0,9
(d) 6,8,9
(e) 4,7
rounding oFF numbers
Let us read out the following interesting facts.
Lightning strikes the Earth about 6000 times every minute.
A hummingbird’s heart beats about 1000 times in a minute.
The Eiffel Tower has about 1700 steps.
We take about 23000 breaths every day.
The above interesting facts do not give exact numbers (figures). They have only
approximate numbers. The figures mentioned above might have been more or less.
Such numbers are called rounded or estimated numbers. To find the estimated number
or value, we round off the number to the nearest tens, hundreds or thousands places.
Mathematics-4 21
