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计算下列各题.能简算的要简算.325×99+325 7÷45+9×54 48×(712+14) 511×14÷511×14.

编辑:chaxungu时间:2026-04-27 13:18:24分类:小学数学题库

计算下列各题,能简算的要简算.
3
25
×99+
3
25
7÷
4
5
+9×
5
4
48×(
7
12
+
1
4
)
5
11
×
1
4
÷
5
11
×
1
4
.
(1)
3
25
×99+
3
25
,
=
3
25
×(99+1),
=
3
25
×100,
=12;

(2)7÷
4
5
+9×
5
4
,
=7×
5
4
+9×
5
4
,
=(7+9)×
5
4
,
=16×
5
4
,
=20;

(3)48×(
7
12
+
1
4
),
=48×
7
12
+48×
1
4
,
=28+12,
=40;

(4)
5
11
×
1
4
÷
5
11
×
1
4
,
=
5
11
×
1
4
×
11
5
×
1
4
,
=(
5
11
×
11
5
)×(
1
4
×
1
4
),
=1×
1
16
,
=
1
16
.