Respuesta :
Using basic facts can help find the equation mentally. We can do 1 × 2 = 2, then 2 × 3 = 6, then 6 × 4 = 24. Then just add the 0 to 24 to get the answer, 240,000.
you take off the zeros at the end of all the numbers and multiply 1,2,3, and 4 and then add the zeros at the end so you get 24 then adding the zeros you get 240000
