Question

Without actual division ,find which of the following rational number is terminating decimals
a. 1/20
b.23/45
c.8/45
d.17/18​

Answer 1

Answer:

a.1/20 is terminating decimal.

Answer 2

Answer:

a. 1/20 = 1/2*2*5

Here it can be seen in the denominator only 2 & 5

So, we can see here that 1/20 is a terminating rational number

b. 23/45 = 23/5*3*3

Here it is not a terminating rational number as there is 3 also in the denominator other than 2 & 5

c. 8/45 = 8/5*3*3

It is also not a terminating rational number as there is 3 in the denominator other than 2 & 5

d. 17/18 = 17/2*3*3

It is also not a terminating rational number as there is 3 in the denominator other than 2 & 5

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