Respuesta :
if he can't do it as a whole he could do 200x3, 10x3, 9x3 will equal the same thing
Answer:
[tex]200\times 3+10\times 3+9\times 3\\=600+30+27\\=657[/tex]
Step-by-step explanation:
Given :
Tony says to multiply 219×3, you multiply 2×3, 1×3 and 9×3, then add the products.
We need to find Tony's error .
We need to help Tony understand how to correctly multiply 219×3 .
In order to multiply 213 by 3, we multiply 3×1 by 3 ( as 3 is at ones place ) then 1×10 by 3 ( as 1 is at tens place ) and then 2× 100 by 3 ( as 2 is at hundreds place )
Then calculate :
[tex]200\times 3+10\times 3+9\times 3\\=600+30+27\\=657[/tex]
