216. 475 - 326 . 1457 + 326 .457
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\(\begin{array}{*{20}{c}}{ + \begin{array}{*{20}{c}}{457}\\{452}\end{array}}\\\hline{\,\,\,907}\end{array}\) \(\begin{array}{*{20}{c}}{ + \begin{array}{*{20}{c}}{326}\\{\,\,29}\end{array}}\\\hline{\,\,\,355}\end{array}\)
\(\begin{array}{*{20}{c}}{ + \begin{array}{*{20}{c}}{762}\\{184}\end{array}}\\\hline{\,\,\,946}\end{array}\) \(\begin{array}{*{20}{c}}{ + \begin{array}{*{20}{c}}{546}\\{172}\end{array}}\\\hline{\,\,\,718}\end{array}\)
25 x 216 + 25 x 326 + 50 x 50
= 25 x 216 + 25 x 326 + 25 x 100
= 25 x ( 216 + 326 + 100 )
= 25 x 642
= 16050
25x216+25x326+50x50
=(25x25)+(216x326)+(50x50)
=625+70416+2500
=73541
− 326 − ( 115 − 326 ) = − 326 − 115 + 326 = ( − 326 + 326 ) − 115 = 0 − 115 = − 115.
326 x 28 + 326 x 72
= 326 x (28+72)
= 326 x 100
= 32 600
\(216.475-326.1457+326.457\)
\(=216.457-326.\left(1457-457\right)\)
\(=102600-326.1000\)
\(=102600-326000\)
\(=-223400\)