Memory Calculation
Sum and Difference of Products 234 x 12 = (2,916) 2 243 x 243• x
576 x 25 = (14,400) 12 M(+=) 12• =
387 x 45 = (17,415) 2916•00M+
(34,731)
–) 456 x 32 = (14,592) 576 x 576• x
(20,139) 25 M(+=) 25• =
14400•00M+
387 x 387• x
45 M(
◊
=) 45• =
17415•00M+
M
◊
34731•00M
◊
456 x 456• x
32 M(–=) 14592•00 M–
M* 20139•00M*
22