Question

What is 67.8x0.45 with the work shown.

Answer 1

30.51

Explanation:

We want to multiply

`67.8 * 0.45`

We convert to fraction and multiply.

`(678)/(10) * (45)/(100)`

`(30510)/(1000)`

This is the same as

`30510 * {10}^( - 3)`

We now move the decimal point back three times

`30.510`

Or

30.51

This is our final answer to the nearest hundredth.

Answer 2

30.51

Explanation:

67.8x0.45

Multiply the two numbers. Ignore the decimals in both numbers

LEts multiply 678 and 45

678

45

--------------

3390

2712

--------------

30510

When we multiply two numbers we got 30510. Now we put the decimal point

67.8 have 1 number after the decimal point

0.45 has 2 numbers after the decimal point

So we move total of 3 decimal place to the left in the final answer

30.510

30.51