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能用简便方法的要用简便方法.①58-16÷45②29-615×29③62.5÷2.5÷4④8
问题详情
①58-16÷
②
③62.5÷2.5÷4
参考答案
①58-16÷45,
=58-20,
=38;
②29-615×29,
=(1-615)×29,
=915×29,
=215;
③62.5÷2.5÷4,
=62.5÷(2.5×4),
=62.5÷10,
=6.25;
④8160÷24-36×2.5,
=340-90,
=250;
⑤36×(56+112-13),
=36×56+36×112-36×13,
=30+3-12,
=21;
⑥3.5÷[1-(0.4+14)],
=3.5÷[1-0.65],
=3.5÷0.35,
=10.
考点:方法