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计算:能简算的要简算(1)22.5×0.48+77.5×0.48(2)24×(13+38−124)(3)4÷12×(58−14)(4)(25+13)÷45−34(5)1.25×32×0.25.

题目详情
计算:能简算的要简算
(1)22.5×0.48+77.5×0.48    
(2)24×(
1
3
+
3
8
1
24
)     
(3)
1
2
×(
5
8
1
4
)
(4)(
2
5
+
1
3
4
5
3
4
         
(5)1.25×32×0.25.
▼优质解答
答案和解析
(1)22.5×0.48+77.5×0.48,
=0.48×( 22.5+77.5),
=0.48×100,
=48;

(2)24×(
1
3
+
3
8
1
24
),
=24×
1
3
+24×
3
8
-24×
1
24

=8+9-1,
=16;

(3)
1
2
×(
5
8
1
4
),
=4÷
1
2
×
3
8

=4×2×
3
8

=3;

(4)(
2
5
+
1
3
4
5
3
4

=
11
15
×
5
4
-
3
4

=
11
12
-
9
12

=
1
6


(5)1.25×32×0.25,
=1.25×4×8×0.25,
=(1.25×8)×(4×0.25),
=10×1,
=10.
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