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能简算的要简算 1011×113×13×11 (45+310)×103 1349×21+28×1349 45-45×56 (34+58)×32 99×598.

编辑:chaxungu时间:2026-04-27 13:18:56分类:小学数学题库

能简算的要简算
10
11
×
1
13
×13×11
(
4
5
+
3
10
)×
10
3
13
49
×21+28×
13
49
4
5
-
4
5
×
5
6
(
3
4
+
5
8
)×32
99×
5
98
.

(1)
10
11
×
1
13
×13×11,
=(
10
11
×11)×(
1
13
×13),
=10×1,
=10;

(2)(
4
5
+
3
10
)×
10
3
,
=
4
5
×
10
3
+
3
10
×
10
3
,
=
8
3
+1,
=
11
3
;

(3)
13
49
×21+28×
13
49
,
=
13
49
×(21+28),
=
13
49
×49,
=13;

(4)
4
5
-
4
5
×
5
6
,
=
4
5
×(1-
5
6
),
=
4
5
×
1
6
,
=
2
15
;

(5)(
3
4
+
5
8
)×32,
=
3
4
×32+
5
8
×32,
=24+20,
=44;

(6)99×
5
98
,
=(98+1)×
5
98
,
=98×
5
98
+1×
5
98
,
=5+
5
98
,
=5
5
98
.