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Year 7 Interactive Maths - Second Edition


Ascending Order

Numbers are said to be in ascending order when they are arranged from the smallest to the largest number.

E.g. 5, 9, 13, 17 and 21 are arranged in ascending order.


Example 18

Arrange the following numbers in ascending order:
43, 52, 15, 26, 34

Solution:

4 cubed is 64, 5 squared is 25, 1 to the power of 5 is 1, 2 to the power of 6 is 64, 3 to the power of 4 is 81

The numbers arranged in ascending order are 1, 25, 64, 64, 81.
So, 15, 52, 43, 26, 34 are arranged in ascending order.


Descending Order

Numbers are said to be in descending order when they are arranged from the largest to the smallest number.

E.g. 25, 21, 17, 13 and 9 are arranged in descending order.


Example 19

Arrange the following numbers in descending order:

42, 52, 24, 33

Solution:

4 squared is 16, 5 squared is 25, 2 to the power of 4 is 16, 3 to the power of 3 is 27

The numbers arranged in descending order are 27, 25, 16, 16.
So, 33, 52, 42, 24 are arranged in descending order.


Key Terms

ascending order, descending order


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