987 x 40 = ( 900 x 40 ) + ( x 40 ) + ( 7 x 40 )

124 + = 47 +136 + 96 + 77

47 x 98 = 47 x 49 x

67 x 79 = + ( 67 x 78 )

( 38 + ) x 20 = 760 + 360

16 x = ( 73 x 16 ) + 16

51 x 25 = ( 100 x 51 ) :

10 + 100 = x 11

(7 x 94) + (6 x 94) + (1 x 94) = x 94

84 x ( 40 + 12 + 48 ) =

( 92 x ) + ( 92 x 5 ) = 920

x 89 x 5 = 890

8 x 24 = 12 x

( + 48 ) : 8 = 5 + 6

94 x 62 = + (94 x 60 )