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怎样简便就怎样计算.(512+115)×24×153.7×34+5.3×0.75+34.9.9+99.9+999.96.8÷4-1.2×25%+425×0.25.
题目详情
| 怎样简便就怎样计算. (
| 3.7×
| ||||||||
| 9.9+99.9+999.9 | 6.8÷4-1.2×25%+4
|
| 怎样简便就怎样计算. (
| 3.7×
| ||||||||
| 9.9+99.9+999.9 | 6.8÷4-1.2×25%+4
|
(
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| 15 |
3.7×
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(
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| 1 |
| 15 |
3.7×
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| 3 |
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| 3 |
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▼优质解答
答案和解析
(1)(
+
)×24×15,
=
×24×15+
×24×15,
=150+24,
=174;
(2)3.7×
+5.3×0.75+
.
=(3.7+5.3+1)×0.75,
=10×0.75,
=7.5;
(3)9.9+99.9+999.9,
=(9.9+0.1)+(99.9+0.1)+(999.9+0.1)-0.1×3,
=10+100+1000-0.3,
=1110-0.3,
=1109.7;
(4)6.8÷4-1.2×25%+4
×0.25.
=6.8×
-1.2×
+4.4×
,
=(6.8-1.2+4.4)×
,
=10×
,
=2.5.
5 5 512 12 12+
)×24×15,
=
×24×15+
×24×15,
=150+24,
=174;
(2)3.7×
+5.3×0.75+
.
=(3.7+5.3+1)×0.75,
=10×0.75,
=7.5;
(3)9.9+99.9+999.9,
=(9.9+0.1)+(99.9+0.1)+(999.9+0.1)-0.1×3,
=10+100+1000-0.3,
=1110-0.3,
=1109.7;
(4)6.8÷4-1.2×25%+4
×0.25.
=6.8×
-1.2×
+4.4×
,
=(6.8-1.2+4.4)×
,
=10×
,
=2.5.
1 1 115 15 15)×24×15,
=
×24×15+
×24×15,
=150+24,
=174;
(2)3.7×
+5.3×0.75+
.
=(3.7+5.3+1)×0.75,
=10×0.75,
=7.5;
(3)9.9+99.9+999.9,
=(9.9+0.1)+(99.9+0.1)+(999.9+0.1)-0.1×3,
=10+100+1000-0.3,
=1110-0.3,
=1109.7;
(4)6.8÷4-1.2×25%+4
×0.25.
=6.8×
-1.2×
+4.4×
,
=(6.8-1.2+4.4)×
,
=10×
,
=2.5.
5 5 512 12 12×24×15+
×24×15,
=150+24,
=174;
(2)3.7×
+5.3×0.75+
.
=(3.7+5.3+1)×0.75,
=10×0.75,
=7.5;
(3)9.9+99.9+999.9,
=(9.9+0.1)+(99.9+0.1)+(999.9+0.1)-0.1×3,
=10+100+1000-0.3,
=1110-0.3,
=1109.7;
(4)6.8÷4-1.2×25%+4
×0.25.
=6.8×
-1.2×
+4.4×
,
=(6.8-1.2+4.4)×
,
=10×
,
=2.5. +
1 1 115 15 15×24×15,
=150+24,
=174;
(2)3.7×
+5.3×0.75+
.
=(3.7+5.3+1)×0.75,
=10×0.75,
=7.5;
(3)9.9+99.9+999.9,
=(9.9+0.1)+(99.9+0.1)+(999.9+0.1)-0.1×3,
=10+100+1000-0.3,
=1110-0.3,
=1109.7;
(4)6.8÷4-1.2×25%+4
×0.25.
=6.8×
-1.2×
+4.4×
,
=(6.8-1.2+4.4)×
,
=10×
,
=2.5.
3 3 34 4 4+5.3×0.75+
.
=(3.7+5.3+1)×0.75,
=10×0.75,
=7.5;
(3)9.9+99.9+999.9,
=(9.9+0.1)+(99.9+0.1)+(999.9+0.1)-0.1×3,
=10+100+1000-0.3,
=1110-0.3,
=1109.7;
(4)6.8÷4-1.2×25%+4
×0.25.
=6.8×
-1.2×
+4.4×
,
=(6.8-1.2+4.4)×
,
=10×
,
=2.5.
3 3 34 4 4.
=(3.7+5.3+1)×0.75,
=10×0.75,
=7.5;
(3)9.9+99.9+999.9,
=(9.9+0.1)+(99.9+0.1)+(999.9+0.1)-0.1×3,
=10+100+1000-0.3,
=1110-0.3,
=1109.7;
(4)6.8÷4-1.2×25%+4
×0.25.
=6.8×
-1.2×
+4.4×
,
=(6.8-1.2+4.4)×
,
=10×
,
=2.5.
2 2 25 5 5×0.25.
=6.8×
-1.2×
+4.4×
,
=(6.8-1.2+4.4)×
,
=10×
,
=2.5.
1 1 14 4 4-1.2×
+4.4×
,
=(6.8-1.2+4.4)×
,
=10×
,
=2.5.
1 1 14 4 4+4.4×
,
=(6.8-1.2+4.4)×
,
=10×
,
=2.5.
1 1 14 4 4,
=(6.8-1.2+4.4)×
,
=10×
,
=2.5.
1 1 14 4 4,
=10×
,
=2.5.
1 1 14 4 4,
=2.5.
| 5 |
| 12 |
| 1 |
| 15 |
=
| 5 |
| 12 |
| 1 |
| 15 |
=150+24,
=174;
(2)3.7×
| 3 |
| 4 |
| 3 |
| 4 |
=(3.7+5.3+1)×0.75,
=10×0.75,
=7.5;
(3)9.9+99.9+999.9,
=(9.9+0.1)+(99.9+0.1)+(999.9+0.1)-0.1×3,
=10+100+1000-0.3,
=1110-0.3,
=1109.7;
(4)6.8÷4-1.2×25%+4
| 2 |
| 5 |
=6.8×
| 1 |
| 4 |
| 1 |
| 4 |
| 1 |
| 4 |
=(6.8-1.2+4.4)×
| 1 |
| 4 |
=10×
| 1 |
| 4 |
=2.5.
| 5 |
| 12 |
| 1 |
| 15 |
=
| 5 |
| 12 |
| 1 |
| 15 |
=150+24,
=174;
(2)3.7×
| 3 |
| 4 |
| 3 |
| 4 |
=(3.7+5.3+1)×0.75,
=10×0.75,
=7.5;
(3)9.9+99.9+999.9,
=(9.9+0.1)+(99.9+0.1)+(999.9+0.1)-0.1×3,
=10+100+1000-0.3,
=1110-0.3,
=1109.7;
(4)6.8÷4-1.2×25%+4
| 2 |
| 5 |
=6.8×
| 1 |
| 4 |
| 1 |
| 4 |
| 1 |
| 4 |
=(6.8-1.2+4.4)×
| 1 |
| 4 |
=10×
| 1 |
| 4 |
=2.5.
| 1 |
| 15 |
=
| 5 |
| 12 |
| 1 |
| 15 |
=150+24,
=174;
(2)3.7×
| 3 |
| 4 |
| 3 |
| 4 |
=(3.7+5.3+1)×0.75,
=10×0.75,
=7.5;
(3)9.9+99.9+999.9,
=(9.9+0.1)+(99.9+0.1)+(999.9+0.1)-0.1×3,
=10+100+1000-0.3,
=1110-0.3,
=1109.7;
(4)6.8÷4-1.2×25%+4
| 2 |
| 5 |
=6.8×
| 1 |
| 4 |
| 1 |
| 4 |
| 1 |
| 4 |
=(6.8-1.2+4.4)×
| 1 |
| 4 |
=10×
| 1 |
| 4 |
=2.5.
| 5 |
| 12 |
| 1 |
| 15 |
=150+24,
=174;
(2)3.7×
| 3 |
| 4 |
| 3 |
| 4 |
=(3.7+5.3+1)×0.75,
=10×0.75,
=7.5;
(3)9.9+99.9+999.9,
=(9.9+0.1)+(99.9+0.1)+(999.9+0.1)-0.1×3,
=10+100+1000-0.3,
=1110-0.3,
=1109.7;
(4)6.8÷4-1.2×25%+4
| 2 |
| 5 |
=6.8×
| 1 |
| 4 |
| 1 |
| 4 |
| 1 |
| 4 |
=(6.8-1.2+4.4)×
| 1 |
| 4 |
=10×
| 1 |
| 4 |
=2.5. +
| 1 |
| 15 |
=150+24,
=174;
(2)3.7×
| 3 |
| 4 |
| 3 |
| 4 |
=(3.7+5.3+1)×0.75,
=10×0.75,
=7.5;
(3)9.9+99.9+999.9,
=(9.9+0.1)+(99.9+0.1)+(999.9+0.1)-0.1×3,
=10+100+1000-0.3,
=1110-0.3,
=1109.7;
(4)6.8÷4-1.2×25%+4
| 2 |
| 5 |
=6.8×
| 1 |
| 4 |
| 1 |
| 4 |
| 1 |
| 4 |
=(6.8-1.2+4.4)×
| 1 |
| 4 |
=10×
| 1 |
| 4 |
=2.5.
| 3 |
| 4 |
| 3 |
| 4 |
=(3.7+5.3+1)×0.75,
=10×0.75,
=7.5;
(3)9.9+99.9+999.9,
=(9.9+0.1)+(99.9+0.1)+(999.9+0.1)-0.1×3,
=10+100+1000-0.3,
=1110-0.3,
=1109.7;
(4)6.8÷4-1.2×25%+4
| 2 |
| 5 |
=6.8×
| 1 |
| 4 |
| 1 |
| 4 |
| 1 |
| 4 |
=(6.8-1.2+4.4)×
| 1 |
| 4 |
=10×
| 1 |
| 4 |
=2.5.
| 3 |
| 4 |
=(3.7+5.3+1)×0.75,
=10×0.75,
=7.5;
(3)9.9+99.9+999.9,
=(9.9+0.1)+(99.9+0.1)+(999.9+0.1)-0.1×3,
=10+100+1000-0.3,
=1110-0.3,
=1109.7;
(4)6.8÷4-1.2×25%+4
| 2 |
| 5 |
=6.8×
| 1 |
| 4 |
| 1 |
| 4 |
| 1 |
| 4 |
=(6.8-1.2+4.4)×
| 1 |
| 4 |
=10×
| 1 |
| 4 |
=2.5.
| 2 |
| 5 |
=6.8×
| 1 |
| 4 |
| 1 |
| 4 |
| 1 |
| 4 |
=(6.8-1.2+4.4)×
| 1 |
| 4 |
=10×
| 1 |
| 4 |
=2.5.
| 1 |
| 4 |
| 1 |
| 4 |
| 1 |
| 4 |
=(6.8-1.2+4.4)×
| 1 |
| 4 |
=10×
| 1 |
| 4 |
=2.5.
| 1 |
| 4 |
| 1 |
| 4 |
=(6.8-1.2+4.4)×
| 1 |
| 4 |
=10×
| 1 |
| 4 |
=2.5.
| 1 |
| 4 |
=(6.8-1.2+4.4)×
| 1 |
| 4 |
=10×
| 1 |
| 4 |
=2.5.
| 1 |
| 4 |
=10×
| 1 |
| 4 |
=2.5.
| 1 |
| 4 |
=2.5.
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