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正确 合理 灵活的计算下面各题. (12+13-56)×1.20.25×32×1.2515×
问题详情
正确、合理、灵活的计算下面各题.
参考答案
(1)(12+13-56)×1.2,
=12×1.2+13×1.2-56×1.2,
=0.6+0.4-1,
=1-1,
=0;
(2)0.25×32×1.25,
=(0.25×4)×(8×1.25),
=1×10,
=10;
(3)15×7.5+(1-45)÷25,
=15×7.5+15÷25,
=(7.5+52)×15,
=10×15,
=2;
(4)235×1.25+114×2.4-125%,
=(235+2.4-1)×114,
=4×114,
=5;
(5)1516×(78-14)÷12,
=1516×58÷12,
=75128÷12,
=11164.
考点: