Respuesta :

[tex]\bf 12,\underline{351}\impliedby \textit{3 hundreds, and 51 units, let's round that} \\\\\\ \begin{array}{llll} 300----- 50-----400\\ \qquad \qquad \uparrow\qquad \qquad \qquad \uparrow \\ \begin{array}{llll} anything\ here\\ rounds\ up\ to\\ 300 \end{array}\quad \begin{array}{llll} anything\ here\\ rounds\ up\ to\\ 400 \end{array} \end{array} \\\\\\ \textit{therefore, the hundreds value of 300, the 51 tips it over to 400} \\\\\\ 12,\underline{400}[/tex]
texaschic101
12351 rounded to the nearest hundred = 12400

** 12351.....find the number in the hundreds position....it is the 3...now look to the number directly to the right of it....if that number is 5 or above, that 3 is rounded up to 4, but if that number is 4 or below, that 3 stays the same. So, the number to the right of 3 is 5, therefore, we round the 3 up to 4....making it 12400.

try this for practice...
12351 rounded to the nearest thousand.....find the number in the thousand place....it is a 2....now look to the number of the right of it....it is a 3....and since it is less then 5, that 2 stays the same...so ur answer would be 12000

just remember, if the number is 5 or above, it rounds up 1, but if the number is 4 or below, it stays the same.