计算下面各题,能简算的要简算.(1)25×1.25×4(2)(3.75+4.1+2.35)×0.8(3)1-512-712(4)99×16

2024-11-15 00:10:50
推荐回答(1个)
回答(1):

(1)25×1.25×4,
=1.25×(25×4),
=1.25×100,
=125;

(2)(3.75+4.1+2.35)×0.8,
=(3.75+2.25+4.1)×0.8,
=(6+4.1)×0.8,
=6×0.8+4.1×0.8,
=4.8+3.28,
=8.08;

(3)1-

5
12
-
7
12

=1-(
5
12
+
7
12
),
=1-1,
=0;

(4)99×16+16,
=(99+1)×16,
=100×16,
=1600;

(5)10÷
5
9
+
2
3
×18,
=10×
9
5
+
2
3
×
18,
=18+12,
=30;

(6)26.35÷6.2+14.5,
=4.25+14.5,
=18.75.