4620+(401-438÷73) 520×(80-720÷9) 350-(350-350÷70) 5580-(120×25-2991) (300-14

2025-03-01 07:06:10
推荐回答(1个)
回答1:

4620+(401-438÷73)
=4260+(401-6),
=4260+395,
=4655;

520×(80-720÷9)
=520×(80-80),
=520×0,
=0;

350-(350-350÷70),
=350-(350-50),
=350-300,
=50;

5580-(120×25-2991),
=5580-(3000-2991),
=5580-9,
=5571;

(300-1456÷26)×32,
=(300-56)×32,
=244×32,
=7808;
642-(36+132)÷4,
=642-168÷4,
=642-42,
=600.