问题 解答题
25×32×125     45×55+55×55
102×34880÷16
99×9999×99+99
101×101-10155×55+55+55×44.
答案

①25×32×125,

=(25×4)×(8×125),

=100×1000,

=100000;

②45×55+55×55,

=(45+55)×55,

=100×55,

=5500;

③102×34,

=(100+2)×34,

=100×34+2×34,

=3400+68,

=3468;

④880÷16,

=880÷8÷2,

=110÷2,

=55;

⑤99×99,

=(100-1)×99,

=100×99-1×99,

=9900-99,

=9801;

⑥99×99+99,

=99×(99+1),

=99×100,

=9900;

⑦101×101-101,

=101×(101-1),

=101×100,

=10100;

⑧55×55+55+55×44,

=55×(55+45+1),

=55×100,

=5500.

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