A-A+
计算 能简算的要简算. 6.12+37+2.88+472924-(524-49)715+71
问题详情
计算,能简算的要简算.
参考答案
(1)6.12+37+2.88+47,
=(6.12+2.88)+(37+47),
=9+1,
=10;
(2)2924-(524-49),
=2924-524+49,
=1+49,
=149;
(3)715+712+815-712,
=(715+815)+(712-712),
=1+0,
=1;
(4)1511-38-58,
=1511-(38+58),
=1511-1,
=411;
(5)56+79+38,
=6072+5672+2772,
=14372;
(6)58-25+14,
=2540-1640+1040,
=1940;
(7)1415-(23-15),
=1415-715,
=715;
(8)1920+(45-740),
=1920-2540,
=1340.
考点: