Question

List the partial products of 42 x 28

Answer 1

The partial products are: 42 * 28 = (40 + 2)*(20 + 8) = 40*20 + 40*8 + 2*20 + 2*8
= 800 + 320 + 40 + 16

Answer 2

The partial product of
`42* 28` are 800,320,40,16 and their sum is 1176.

Explanation:

The given expression is,

`42* 28`

In number 42 the place value of 4 is 40 and the place value of 2 is 2. In number 28 the place value of 2 is 20 and the place value of 8 is 8.

To find the partial product, we have multiply the place values of first number with the place values of second number.

Place values of 42 are 40 and 2. Place values of 28 are 20 and 8.

`40* 20=800`

`40* 8=320`

`2* 20=40`

`2* 8=16`

Therefore the partial product of
`42* 28` are 800,320,40 and 16.

To find the total product, we have add all partial products.

`T=800+320+40+16=1176`

The value of given expression is 1176.