(35+115)×3017×316100×10010178×415-715×48935×1834-34×2627.-数学
题文
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答案
(1)(
=
=18+2, =20; (2)17×
=(16+1)×
=16×
=3+
=3
(3)100×
=(101-1)×
=101×
=100-
=99
(4)
|
题文
|
答案
(1)(
=
=18+2, =20; (2)17×
=(16+1)×
=16×
=3+
=3
(3)100×
=(101-1)×
=101×
=100-
=99
(4)
|