计算下面各题.(能简算的要简算)(1)(12.5×8-40)÷0.6 (2)7.25×16.3-12.3×7.25 (3)(78+3

2024-11-22 22:10:33
推荐回答(1个)
回答1:

(1)(12.5×8-40)÷0.6,
=(100-40)÷0.6,
=60÷0.6,
=100;

(2)7.25×16.3-12.3×7.25,
=(16.3-12.3)×7.25,
=4×7.25,
=4×(7+0.25),
=28+1,
=29;

(3)(

7
8
+
3
4
)÷
1
8

=
13
8
×8,
=13;

(4)91+91×(
2
13
-
1
7
),
=91+91×
2
13
-91×
1
7

=91+14-13,
=92;

(5)5.2×101,
=5.2×(100+1),
=520+5.2,
=525.2;

(6)14.6-3.625-6.375,
=14.6-(3.625+6.375),
=14.6-10,
=4.6.