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计算题:能简算的要简算.2.5×3.2×12.5[334-(15+13)×4.5]÷0.6897×38-37.5%+104×0.375111139×1409999×2222+3333×3334(927+729)÷(57+59)
题目详情
计算题:能简算的要简算.
2.5×3.2×12.5 | [3
| 897×
| ||||||||||
| 9999×2222+3333×3334 | (9
|
▼优质解答
答案和解析
(1)2.5×3.2×12.5
=(2.5×4)×(0.8×12.5)
=10×10
=100
(2)[3
-(
+
)×4.5]÷0.6
=[3
-
×4.5-
×4.5]÷0.6
=[3
-0.9-1.5]÷0.6
=1.35÷0.6
=2.25
(3)897×
-37.5%+104×0.375
=(897-1+104)×0.375
=1000×0.375
=375
(4)
×140
=
×(139+1)
=
×139+
=111+
=111
(5)9999×2222+3333×3334
=3333×6666+3333×3334
=3333×(6666+3334)
=3333×10000
=33330000
(6)(9
+7
)÷(
+
)
=13×(
+
)÷(
+
)
=13×[(
+
)÷(
+
)]
=13×1
=13
=(2.5×4)×(0.8×12.5)
=10×10
=100
(2)[3
3 |
4 |
1 |
5 |
1 |
3 |
=[3
3 |
4 |
1 |
5 |
1 |
3 |
=[3
3 |
4 |
=1.35÷0.6
=2.25
(3)897×
3 |
8 |
=(897-1+104)×0.375
=1000×0.375
=375
(4)
111 |
139 |
=
111 |
139 |
=
111 |
139 |
111 |
139 |
=111+
111 |
139 |
=111
111 |
139 |
(5)9999×2222+3333×3334
=3333×6666+3333×3334
=3333×(6666+3334)
=3333×10000
=33330000
(6)(9
2 |
7 |
2 |
9 |
5 |
7 |
5 |
9 |
=13×(
5 |
7 |
5 |
9 |
5 |
7 |
5 |
9 |
=13×[(
5 |
7 |
5 |
9 |
5 |
7 |
5 |
9 |
=13×1
=13
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