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Also, when we arrange the numbers in decreasing order, that is, from the greatest to the
smallest, it is called the descending order.
So, the descending order of the numbers is: 6,543 > 5,023 > 2,937 > 1,359.
example: The depths of the Atlantic Ocean is 3,646 m; the Pacific Ocean is 4,280 m; the
Arctic Ocean is 1,204 m; the Indian Ocean is 3,741 m. Arrange these depths of Oceans
in descending order.
Solution: Looking at the thousands place digits, 3, 4, 1 and 3; we find that 4 > 3 = 3 > 1.
That means, 4,280 is the greatest and 1,204 is the smallest. Now, comparing
the hundreds digits of the other two numbers, we th H t O
find 7 > 6. So, 3,741 > 3,646. 3 6 4 6
4 2 8 0 Greatest
Thus, the four numbers in descending order will 1 2 0 4 Smallest
be arranged as: 4,280 > 3,741 > 3,646 > 1,204 3 7 4 1
Knowledge Desk
Most of the Earth's surface is covered by the oceans. The major four oceans are
the Atlantic, Pacific, Arctic and Indian Oceans.
Practice time 1C
1. Compare the following by filling in the blanks >, < or =.
(a) 524 ____ 2,193 (b) 7,329 ____ 3,279 (c) 8,028 ____ 8,208
(d) 2,613 ____ 2,631 (e) 9,162 ____ 9,126 (f) 9,325 ___ 9,325
2. In each set of numbers, encircle the smallest number and underline the greatest
number.
(a) 5,219 7,346 2,513 3,745 (b) 7,116 3,745 2,015 3,200
(c) 8,346 7,327 8,611 5,039 (d) 5,001 5,010 5,100 5,101
3. arrange the following numbers in descending order.
(a) 6,738 6,378 6,873 6,387 (b) 3,506 7,093 239 8,132
(c) 1,023 3,458 1,320 3,548 (d) 6,895 6,985 6,589 6,598
4. arrange the following numbers in ascending order.
(a) 5,846 5,346 5,446 5,146 (b) 8,725 9,814 8,275 857
(c) 9,037 9,073 9,307 9,703 (d) 2,679 267 9,672 967
18 Mathematics-3
