
递等式计算 18×(537-488) 26×8×125 4200÷15÷2 25×33×4
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(1)18×(537-488),
=18×49,
=882;
(2)26×8×125,
=26×(8×125),
=26×1000,
=26000;
(3)4200÷15÷2,
=4200÷(15×2),
=4200÷30,
=140;
(4)25×33×4,
=25×4×33,
=100×33,
=3300.
=18×49,
=882;
(2)26×8×125,
=26×(8×125),
=26×1000,
=26000;
(3)4200÷15÷2,
=4200÷(15×2),
=4200÷30,
=140;
(4)25×33×4,
=25×4×33,
=100×33,
=3300.
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