33.98+67.42+67.34+67.22
=33.98+67.(42+34+22)
=33.98+67.98
=(33+67).98
=100.98
=9800
Ta có:
33 x 98 + 67 x 42 + 67 x 34 + 67 x 22
= 33 x 98 + 67(42 + 34 + 22)
= 33 x 98 + 67 x 98
= (33 + 67) 98
= 100 x 98
= 9800
Ta có:
33 x 98 + 67 x 42 + 67 x 34 + 67 x 22
= 33 x 98 + 67(42 + 34 + 22)
= 33 x 98 + 67 x 98
= (33 + 67) 98
= 100 x 98
= 9800