怎样简便就怎样计算.1300÷25÷4 (262-26×7)÷40 192-(92-38) 99×13+13104×28 32×25×1

2025-03-10 23:23:37
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回答1:

1300÷25÷4,
=1300÷(25×4),
=1300÷100,
=13;

(262-26×7)÷40,
=(262-182)÷40,
=80÷40,
=2;

192-(92-38),
=192-92+38,
=100+38,
=138;

99×13+13,
=(99+1)×13,
=100×13,
=1300;

32×25×125,
=4×8×25×125,
=(4×25)×(8×125),
=100×1000,
=100000;

104×28,
=(100+4)×28,
=100×28+4×28,
=2800+112,
=2912.