题目内容

计算下列各题,能简算的要简算.
3.75×
3
5
+
3
5
×1.25

0.25×1.25×32
5
7
+
2
3
+1
1
3
+8
2
7
1
4
+
5
6
+
1
12
)÷
1
12
5.36-1.86-3.146.8×8+3.5×8-44.
(1)3.75×
3
5
+
3
5
×1.25,
=(3.75+1.25)×
3
5

=5×
3
5

=3;

(2)0.25×1.25×32,
=0.25×1.25×8×4,
=(0.25×4)×(1.25×8),
=1×10,
=10;

(3)
5
7
+
2
3
+1
1
3
+8
2
7

=(
5
7
+8
2
7
)+(
2
3
+1
1
3
),
=9+2,
=11;

(4)(
1
4
+
5
6
+
1
12
)÷
1
12

=(
1
4
+
5
6
+
1
12
)×12,
=
1
4
×12+
5
6
×12+
1
12
×12,
=3+10+2,
=15;

(5)5.36-1.86-3.14,
=5.36-(1.86+3.14),
=5.36-5,
=0.36;

(6)6.8×8+3.5×8-44,
=(6.8+3.5)×8-44,
=10.3×8-44,
=82.4-44,
=38.4.
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