(1)(35+25)×15=______×______+______×______(2)12×13+12×13=______×(______+______)(3)(110+15)×5=______+______(4)100×2399=(99+1)×2399=______+______=______.-数学
题文
(1)(
(2)
(3)(
(4)100×
|
答案
(1)(
=
=9+6, =15; (2)
=
=
=
(3)(
=
=
|
题文
(1)(
(2)
(3)(
(4)100×
|
答案
(1)(
=
=9+6, =15; (2)
=
=
=
(3)(
=
=
|