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灵活计算. 952-952÷17 (34-34×25)÷15 (512+119)×12+719 1.28×5.37-2.8×0.537 27×1115+415÷72 121×117×

编辑:chaxungu时间:2026-04-27 13:19:00分类:小学数学题库

灵活计算.
952-952÷17(
3
4
-
3
4
×
2
5
)÷
1
5
(
5
12
+
1
19
)×12+
7
19
1.28×5.37-2.8×0.537
2
7
×
11
15
+
4
15
÷
7
2
1
21
×
1
17
×(2009×42×85)
(1)952-952÷17,
=952-56,
=896;

(2)(
3
4
-
3
4
×
2
5
)÷
1
5
,
=(
3
4
-
3
10
)÷
1
5
,
=
9
20
÷
1
5
,
=
9
4
;

(3)(
5
12
+
1
19
)×12+
7
19
,
=
5
12
×12+
1
19
×12+
7
19
,
=5+
12
19
+
7
12
,
=5+(
12
19
+
7
12
),
=5+1,
=6;

(4)1.28×5.37-2.8×0.537,
=1.28×5.37-0.28×5.37,
=(1.28-0.28)×5.37,
=1×5.37,
=5.37;

(5)
2
7
×
11
15
+
4
15
÷
7
2
,
=
2
7
×
11
15
+
4
15
×
2
7
,
=
2
7
×(
11
15
+
4
15
),
=
2
7
×1,
=
2
7
;

(6)
1
21
×
1
17
×(2009×42×85),
=
1
21
×
1
17
×2009×42×85,
=2009×2×5,
=2009×(2×5),
=2009×10,
=20090.