问题 解答题
怎样简便就怎样计算
63+152+137+148=102×99=645-180-245=
382×101-382=125×24=35×8+35×6-4×35=
1280÷16÷4=890-147-53=32×25×125=
答案

①63+152+137+148,

=(63+137)+(148+152),

=200+300,

=500;

②102×99,

=(100+2)×99,

=9900+198,

=10098;

③645-180-245,

=(645-245)-180,

=400-180,

=220;

④382×101-382,

=382×(101-1)

=382×100,

=38200;

⑤125×24,

=(125×8)×3,

=1000×3,

=3000;

⑥35×8+35×6-4×35,

=35×(8+6-4),

=35×10,

=350;

⑦1280÷16÷4,

=1280÷(16×4),

=1280÷64,

=20;

⑧890-147-53,

=890-(147+53),

=890-200,

=690;

⑨32×25×125,

=(25×4)×(125×8),

=100×1000,

=100000.

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