问题
解答题
递等式计算.
(1)6129-(715+1129)-285
(2)3279+481÷37
(3)6868÷34×720
(4)13320-222×56.
答案
(1)6129-(715+1129)-285,
=6129-715-1129-285,
=(6129-1129)-(715+285),
=5000-1000,
=4000;
(2)3279+481÷37,
=3279+13,
=3292;
(3)6868÷34×720,
=202×720,
=145440;
(4)13320-222×56,
=13320-12432,
=888.