A-A+
计算(1)56+79+38(2)58-25+14(3)1415-(23-15)(4)1920
问题详情
(1)
参考答案
(1)56+79+38,
=6072+5672+2772,
=11672+2772,
=14372;
(2)58-25+14,
=2540-1640+1040,
=940+1040,
=1940;
(3)1415-(23-15),
=1415-715,
=715;
(4)1920+(45-740),
=1920+2540,
=6340;
(5)76-(710-13),
=76-1130,
=45;
(6)118-(23-14),
=118-512,
=2324;
(7)(4+27)-(914+12),
=427-(914+12),
=427-1614,
=307-87,
=227;
(8)136-(34-512+13),
=136-(912-512+412),
=136-(412+412),
=136-812,
=32.
考点: