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计算下列各题,能简算的要简算.(1)79÷115+29×511(2)(16+19-112)×4×9(3)(8.5-4)×10.32÷4(4)5÷14×[(1-14)×1.2](5)1.3-3.79+9.7-6.21(6)3.2×12.5×2.5.

题目详情
计算下列各题,能简算的要简算.
(1)
7
9
÷
11
5
+
2
9
×
5
11
(2)(
1
6
+
1
9
-
1
12
)×4×9
(3)(8.5-4)×10.32÷4
(4)5÷
1
4
×[(1-
1
4
)×1.2]
(5)1.3-3.79+9.7-6.21 (6)3.2×12.5×2.5.
计算下列各题,能简算的要简算.
(1)
7
9
÷
11
5
+
2
9
×
5
11
(2)(
1
6
+
1
9
-
1
12
)×4×9
(3)(8.5-4)×10.32÷4
(4)5÷
1
4
×[(1-
1
4
)×1.2]
(5)1.3-3.79+9.7-6.21 (6)3.2×12.5×2.5.
计算下列各题,能简算的要简算.
(1)
7
9
÷
11
5
+
2
9
×
5
11
(2)(
1
6
+
1
9
-
1
12
)×4×9
(3)(8.5-4)×10.32÷4计算下列各题,能简算的要简算.
(1)
7
9
÷
11
5
+
2
9
×
5
11

7
9
÷
11
5
+
2
9
×
5
11
7
9
7799
11
5
+
2
9
×
5
11
11
5
111155
2
9
×
5
11
2
9
2299
5
11
5
11
551111(2)(
1
6
+
1
9
-
1
12
)×4×9
1
6
+
1
9
-
1
12
)×4×9
1
6
1166
1
9
-
1
12
)×4×9
1
9
1199
1
12
)×4×9
1
12
111212(3)(8.5-4)×10.32÷4 (4)5÷
1
4
×[(1-
1
4
)×1.2]
(5)1.3-3.79+9.7-6.21 (6)3.2×12.5×2.5.(4)5÷
1
4
×[(1-
1
4
)×1.2]
1
4
×[(1-
1
4
)×1.2]
1
4
1144
1
4
)×1.2]
1
4
1144(5)1.3-3.79+9.7-6.21(6)3.2×12.5×2.5.
▼优质解答
答案和解析
(1)
7
9
÷
11
5
+
2
9
×
5
11

=(
7
9
+
2
9
)×
5
11

=
5
11


(2)(
1
6
+
1
9
-
1
12
)×4×9,
=
1
6
×36+
1
9
×36
1
12
×36,
=6+4-3
=7;

(3)(8.5-4)×10.32÷4,
=4.5×10.32÷4,
=46.44÷4,
=11.61,

(4)5÷
1
4
×[(1-
1
4
)×1.2],
=5÷
1
4
×[
3
4
×1.2],
=5÷
1
4
×
9
10

=18,

(5)1.3-3.79+9.7-6.21,
=(1.3+9.7)-(3.79+6.21),
=11-10,
=1,

(6)3.2×12.5×2.5,
=(12.5×8)×(2.5×0.4),
=100×1,
=100.
7
9
777999÷
11
5
+
2
9
×
5
11

=(
7
9
+
2
9
)×
5
11

=
5
11


(2)(
1
6
+
1
9
-
1
12
)×4×9,
=
1
6
×36+
1
9
×36
1
12
×36,
=6+4-3
=7;

(3)(8.5-4)×10.32÷4,
=4.5×10.32÷4,
=46.44÷4,
=11.61,

(4)5÷
1
4
×[(1-
1
4
)×1.2],
=5÷
1
4
×[
3
4
×1.2],
=5÷
1
4
×
9
10

=18,

(5)1.3-3.79+9.7-6.21,
=(1.3+9.7)-(3.79+6.21),
=11-10,
=1,

(6)3.2×12.5×2.5,
=(12.5×8)×(2.5×0.4),
=100×1,
=100.
÷
11
5
111111555+
2
9
×
5
11

=(
7
9
+
2
9
)×
5
11

=
5
11


(2)(
1
6
+
1
9
-
1
12
)×4×9,
=
1
6
×36+
1
9
×36
1
12
×36,
=6+4-3
=7;

(3)(8.5-4)×10.32÷4,
=4.5×10.32÷4,
=46.44÷4,
=11.61,

(4)5÷
1
4
×[(1-
1
4
)×1.2],
=5÷
1
4
×[
3
4
×1.2],
=5÷
1
4
×
9
10

=18,

(5)1.3-3.79+9.7-6.21,
=(1.3+9.7)-(3.79+6.21),
=11-10,
=1,

(6)3.2×12.5×2.5,
=(12.5×8)×(2.5×0.4),
=100×1,
=100.
2
9
222999×
5
11

=(
7
9
+
2
9
)×
5
11

=
5
11


(2)(
1
6
+
1
9
-
1
12
)×4×9,
=
1
6
×36+
1
9
×36
1
12
×36,
=6+4-3
=7;

(3)(8.5-4)×10.32÷4,
=4.5×10.32÷4,
=46.44÷4,
=11.61,

(4)5÷
1
4
×[(1-
1
4
)×1.2],
=5÷
1
4
×[
3
4
×1.2],
=5÷
1
4
×
9
10

=18,

(5)1.3-3.79+9.7-6.21,
=(1.3+9.7)-(3.79+6.21),
=11-10,
=1,

(6)3.2×12.5×2.5,
=(12.5×8)×(2.5×0.4),
=100×1,
=100.
5
11
555111111,
=(
7
9
+
2
9
)×
5
11

=
5
11


(2)(
1
6
+
1
9
-
1
12
)×4×9,
=
1
6
×36+
1
9
×36
1
12
×36,
=6+4-3
=7;

(3)(8.5-4)×10.32÷4,
=4.5×10.32÷4,
=46.44÷4,
=11.61,

(4)5÷
1
4
×[(1-
1
4
)×1.2],
=5÷
1
4
×[
3
4
×1.2],
=5÷
1
4
×
9
10

=18,

(5)1.3-3.79+9.7-6.21,
=(1.3+9.7)-(3.79+6.21),
=11-10,
=1,

(6)3.2×12.5×2.5,
=(12.5×8)×(2.5×0.4),
=100×1,
=100.
7
9
777999+
2
9
)×
5
11

=
5
11


(2)(
1
6
+
1
9
-
1
12
)×4×9,
=
1
6
×36+
1
9
×36
1
12
×36,
=6+4-3
=7;

(3)(8.5-4)×10.32÷4,
=4.5×10.32÷4,
=46.44÷4,
=11.61,

(4)5÷
1
4
×[(1-
1
4
)×1.2],
=5÷
1
4
×[
3
4
×1.2],
=5÷
1
4
×
9
10

=18,

(5)1.3-3.79+9.7-6.21,
=(1.3+9.7)-(3.79+6.21),
=11-10,
=1,

(6)3.2×12.5×2.5,
=(12.5×8)×(2.5×0.4),
=100×1,
=100.
+
2
9
222999)×
5
11

=
5
11


(2)(
1
6
+
1
9
-
1
12
)×4×9,
=
1
6
×36+
1
9
×36
1
12
×36,
=6+4-3
=7;

(3)(8.5-4)×10.32÷4,
=4.5×10.32÷4,
=46.44÷4,
=11.61,

(4)5÷
1
4
×[(1-
1
4
)×1.2],
=5÷
1
4
×[
3
4
×1.2],
=5÷
1
4
×
9
10

=18,

(5)1.3-3.79+9.7-6.21,
=(1.3+9.7)-(3.79+6.21),
=11-10,
=1,

(6)3.2×12.5×2.5,
=(12.5×8)×(2.5×0.4),
=100×1,
=100.
5
11
555111111,
=
5
11


(2)(
1
6
+
1
9
-
1
12
)×4×9,
=
1
6
×36+
1
9
×36
1
12
×36,
=6+4-3
=7;

(3)(8.5-4)×10.32÷4,
=4.5×10.32÷4,
=46.44÷4,
=11.61,

(4)5÷
1
4
×[(1-
1
4
)×1.2],
=5÷
1
4
×[
3
4
×1.2],
=5÷
1
4
×
9
10

=18,

(5)1.3-3.79+9.7-6.21,
=(1.3+9.7)-(3.79+6.21),
=11-10,
=1,

(6)3.2×12.5×2.5,
=(12.5×8)×(2.5×0.4),
=100×1,
=100.
5
11
555111111;

(2)(
1
6
+
1
9
-
1
12
)×4×9,
=
1
6
×36+
1
9
×36
1
12
×36,
=6+4-3
=7;

(3)(8.5-4)×10.32÷4,
=4.5×10.32÷4,
=46.44÷4,
=11.61,

(4)5÷
1
4
×[(1-
1
4
)×1.2],
=5÷
1
4
×[
3
4
×1.2],
=5÷
1
4
×
9
10

=18,

(5)1.3-3.79+9.7-6.21,
=(1.3+9.7)-(3.79+6.21),
=11-10,
=1,

(6)3.2×12.5×2.5,
=(12.5×8)×(2.5×0.4),
=100×1,
=100.
1
6
111666+
1
9
-
1
12
)×4×9,
=
1
6
×36+
1
9
×36
1
12
×36,
=6+4-3
=7;

(3)(8.5-4)×10.32÷4,
=4.5×10.32÷4,
=46.44÷4,
=11.61,

(4)5÷
1
4
×[(1-
1
4
)×1.2],
=5÷
1
4
×[
3
4
×1.2],
=5÷
1
4
×
9
10

=18,

(5)1.3-3.79+9.7-6.21,
=(1.3+9.7)-(3.79+6.21),
=11-10,
=1,

(6)3.2×12.5×2.5,
=(12.5×8)×(2.5×0.4),
=100×1,
=100.
+
1
9
111999-
1
12
)×4×9,
=
1
6
×36+
1
9
×36
1
12
×36,
=6+4-3
=7;

(3)(8.5-4)×10.32÷4,
=4.5×10.32÷4,
=46.44÷4,
=11.61,

(4)5÷
1
4
×[(1-
1
4
)×1.2],
=5÷
1
4
×[
3
4
×1.2],
=5÷
1
4
×
9
10

=18,

(5)1.3-3.79+9.7-6.21,
=(1.3+9.7)-(3.79+6.21),
=11-10,
=1,

(6)3.2×12.5×2.5,
=(12.5×8)×(2.5×0.4),
=100×1,
=100.
1
12
111121212)×4×9,
=
1
6
×36+
1
9
×36
1
12
×36,
=6+4-3
=7;

(3)(8.5-4)×10.32÷4,
=4.5×10.32÷4,
=46.44÷4,
=11.61,

(4)5÷
1
4
×[(1-
1
4
)×1.2],
=5÷
1
4
×[
3
4
×1.2],
=5÷
1
4
×
9
10

=18,

(5)1.3-3.79+9.7-6.21,
=(1.3+9.7)-(3.79+6.21),
=11-10,
=1,

(6)3.2×12.5×2.5,
=(12.5×8)×(2.5×0.4),
=100×1,
=100.
1
6
111666×36+
1
9
×36
1
12
×36,
=6+4-3
=7;

(3)(8.5-4)×10.32÷4,
=4.5×10.32÷4,
=46.44÷4,
=11.61,

(4)5÷
1
4
×[(1-
1
4
)×1.2],
=5÷
1
4
×[
3
4
×1.2],
=5÷
1
4
×
9
10

=18,

(5)1.3-3.79+9.7-6.21,
=(1.3+9.7)-(3.79+6.21),
=11-10,
=1,

(6)3.2×12.5×2.5,
=(12.5×8)×(2.5×0.4),
=100×1,
=100.
+
1
9
111999×36
1
12
×36,
=6+4-3
=7;

(3)(8.5-4)×10.32÷4,
=4.5×10.32÷4,
=46.44÷4,
=11.61,

(4)5÷
1
4
×[(1-
1
4
)×1.2],
=5÷
1
4
×[
3
4
×1.2],
=5÷
1
4
×
9
10

=18,

(5)1.3-3.79+9.7-6.21,
=(1.3+9.7)-(3.79+6.21),
=11-10,
=1,

(6)3.2×12.5×2.5,
=(12.5×8)×(2.5×0.4),
=100×1,
=100.
1
12
111121212×36,
=6+4-3
=7;

(3)(8.5-4)×10.32÷4,
=4.5×10.32÷4,
=46.44÷4,
=11.61,

(4)5÷
1
4
×[(1-
1
4
)×1.2],
=5÷
1
4
×[
3
4
×1.2],
=5÷
1
4
×
9
10

=18,

(5)1.3-3.79+9.7-6.21,
=(1.3+9.7)-(3.79+6.21),
=11-10,
=1,

(6)3.2×12.5×2.5,
=(12.5×8)×(2.5×0.4),
=100×1,
=100.
1
4
111444×[(1-
1
4
)×1.2],
=5÷
1
4
×[
3
4
×1.2],
=5÷
1
4
×
9
10

=18,

(5)1.3-3.79+9.7-6.21,
=(1.3+9.7)-(3.79+6.21),
=11-10,
=1,

(6)3.2×12.5×2.5,
=(12.5×8)×(2.5×0.4),
=100×1,
=100.
1
4
111444)×1.2],
=5÷
1
4
×[
3
4
×1.2],
=5÷
1
4
×
9
10

=18,

(5)1.3-3.79+9.7-6.21,
=(1.3+9.7)-(3.79+6.21),
=11-10,
=1,

(6)3.2×12.5×2.5,
=(12.5×8)×(2.5×0.4),
=100×1,
=100.
÷
1
4
111444×[
3
4
×1.2],
=5÷
1
4
×
9
10

=18,

(5)1.3-3.79+9.7-6.21,
=(1.3+9.7)-(3.79+6.21),
=11-10,
=1,

(6)3.2×12.5×2.5,
=(12.5×8)×(2.5×0.4),
=100×1,
=100.
3
4
333444×1.2],
=5÷
1
4
×
9
10

=18,

(5)1.3-3.79+9.7-6.21,
=(1.3+9.7)-(3.79+6.21),
=11-10,
=1,

(6)3.2×12.5×2.5,
=(12.5×8)×(2.5×0.4),
=100×1,
=100.
1
4
111444×
9
10

=18,

(5)1.3-3.79+9.7-6.21,
=(1.3+9.7)-(3.79+6.21),
=11-10,
=1,

(6)3.2×12.5×2.5,
=(12.5×8)×(2.5×0.4),
=100×1,
=100.
9
10
999101010,
=18,

(5)1.3-3.79+9.7-6.21,
=(1.3+9.7)-(3.79+6.21),
=11-10,
=1,

(6)3.2×12.5×2.5,
=(12.5×8)×(2.5×0.4),
=100×1,
=100.