Question

Tony's calculator correctly shows 3.4 x 0.5=1.7. Explain why the number of decimal places in the product is not the same as the number of decimal places in the two factors.

Answer 1

3.4.....this has 1 number in the decimal place
0.5....this has 1 number in the decimal place

so u have a total of 2 decimal places...
3.4 * 0.5 = 1.70...so there actually is 2 decimal places....but 1.70 can be written as 1.7...that makes it appear to only have 1 decimal place

Answer 2

Because 0 at end after decimal has no value.

Explanation:

Given : Tony's calculator correctly shows
`3.4* 0.5=1.7`

To find : Explain why the number of decimal places in the product is not the same as the number of decimal places in the two factors ?

Solution :

3.4 has 1 number in the decimal place

0.5 has 1 number in the decimal place

So, total we have 2 decimal place

i.e.
`3.4* 0.5=1.70`

But in 1.70 the 0 at end after decimal has no value so we write it as 1.7.

that's why the number of decimal places in the product is not the same as the number of decimal places in the two factors.