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计算.能简算的要简算 1.2-0.5×1.8÷0.9 8×7×1.25 516×1119×3+2719×1516 (38-38÷83)×169 35×8.8+0.6×15+60% 725×[(37-1

编辑:chaxungu时间:2026-04-27 13:18:17分类:小学数学题库

计算,能简算的要简算
1.2-0.5×1.8÷0.98×7×1.25
5
16
×
11
19
×3+
27
19
×
15
16
(
3
8
-
3
8
÷
8
3
)×
16
9
3
5
×8.8+0.6×
1
5
+60%
7
25
×[(
3
7
-
1
14
)×
5
6
].
(1)1.2-0.5×1.8÷0.9,
=1.2-0.5×(1.8÷0.9),
=1.2-0.5×2,
=1.2-1,
=0.2;

(2)8×7×1.25,
=(8×1.25)×7,
=10×7,
=70;

(3)
5
16
×
11
19
×3+
27
19
×
15
16
,
=(
5
16
×3)×
11
19
+
27
19
×
15
16
,
=(
11
19
+
27
19
)×
15
16
,
=2×
15
16
,
=
15
8
;

(4)(
3
8
-
3
8
÷
8
3
)×
16
9
,
=(
3
8
-
3
8
×
3
8
)×
16
9
,
=(1-
3
8
)×
3
8
×
16
9
,
=
5
8
×
2
3
,
=
5
12
;

(5)
3
5
×8.8+0.6×
1
5
+60%,
=0.6×8.8+0.6×0.2+0.6,
=0.6×(8.8+0.2+1),
=0.6×10,
=6;

(6)
7
25
×[(
3
7
-
1
14
)×
5
6
],
=
7
25
×[
5
14
×
5
6
],
=
7
25
×
5
14
×
5
6
,
=
1
12
.