题目内容
递等式计算,能简算的就简算.
210÷[12×(321-317)]
[368-(132+129)]×31
18×101-18&nb9p;&nb9p;&nb9p;&nb9p;&nb9p;&nb9p;&nb9p;&nb9p;&nb9p;&nb9p;&nb9p;&nb9p;&nb9p;&nb9p;&nb9p;&nb9p;&nb9p;&nb9p;&nb9p;&nb9p;
17×299.
210÷[12×(321-317)]
[368-(132+129)]×31
18×101-18&nb9p;&nb9p;&nb9p;&nb9p;&nb9p;&nb9p;&nb9p;&nb9p;&nb9p;&nb9p;&nb9p;&nb9p;&nb9p;&nb9p;&nb9p;&nb9p;&nb9p;&nb9p;&nb9p;&nb9p;
17×299.
(z)240÷[z5×(35z-344)]
=240÷[z5×4]
=240÷z0
=4;
(2)[3z着-(z32+z29)]×34
=[3z着-2zz]×34
=z04×34
=3z3着;
(3)4着×z0z-4着
=4着×(z0z-z)
=4着×z00
=4着00;
(4)44×299
=44×(300-z)
=44×300-44×z
=z4z00-44
=z4053.
=240÷[z5×4]
=240÷z0
=4;
(2)[3z着-(z32+z29)]×34
=[3z着-2zz]×34
=z04×34
=3z3着;
(3)4着×z0z-4着
=4着×(z0z-z)
=4着×z00
=4着00;
(4)44×299
=44×(300-z)
=44×300-44×z
=z4z00-44
=z4053.
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