早教吧作业答案频道 -->数学-->
简便计算：16.4+3.5+83.6+166.59.16-5.72-1.2864×12.5×0.25×0.05312.5×12.3-312.5×6.9+312.5123+234+345+…+979899+9899100313+524+735+…+1959799+19798100．
题目详情
简便计算：
16.4+3.5+83.6+166.5
9.16-5.72-1.28
64×12.5×0.25×0.05
312.5×12.3-312.5×6.9+312.5
．简便计算：
16.4+3.5+83.6+166.5
9.16-5.72-1.28
64×12.5×0.25×0.05
312.5×12.3-312.5×6.9+312.5
．
．
1
+2
+3
+…+97
+98
3
+5
+7
+…+195
+197
1
+2
+3
+…+97
+98
1
+2
+3
+…+97
+98
2 3 2 2 3 3
3 4 3 3 4 4
4 5 4 4 5 5
98 99 98 98 99 99
99 100 99 99 100 100 3
+5
+7
+…+195
+197
3
+5
+7
+…+195
+197
1 3 1 1 3 3
2 4 2 2 4 4
3 5 3 3 5 5
97 99 97 97 99 99
98 100 98 98 100 100
16.4+3.5+83.6+166.5
9.16-5.72-1.28
64×12.5×0.25×0.05
312.5×12.3-312.5×6.9+312.5
1
| ||||||||||
3
|
16.4+3.5+83.6+166.5
9.16-5.72-1.28
64×12.5×0.25×0.05
312.5×12.3-312.5×6.9+312.5
1
| ||||||||||
3
|
1
| ||||||||||
3
|
1
| ||||||||||
3
|
| 2 |
| 3 |
| 3 |
| 4 |
| 4 |
| 5 |
| 98 |
| 99 |
| 99 |
| 100 |
| 1 |
| 3 |
| 2 |
| 4 |
| 3 |
| 5 |
| 97 |
| 99 |
| 98 |
| 100 |
| 2 |
| 3 |
| 3 |
| 4 |
| 4 |
| 5 |
| 98 |
| 99 |
| 99 |
| 100 |
| 2 |
| 3 |
| 3 |
| 4 |
| 4 |
| 5 |
| 98 |
| 99 |
| 99 |
| 100 |
| 2 |
| 3 |
| 3 |
| 4 |
| 4 |
| 5 |
| 98 |
| 99 |
| 99 |
| 100 |
| 1 |
| 3 |
| 2 |
| 4 |
| 3 |
| 5 |
| 97 |
| 99 |
| 98 |
| 100 |
| 1 |
| 3 |
| 2 |
| 4 |
| 3 |
| 5 |
| 97 |
| 99 |
| 98 |
| 100 |
| 1 |
| 3 |
| 2 |
| 4 |
| 3 |
| 5 |
| 97 |
| 99 |
| 98 |
| 100 |
▼优质解答
答案和解析
（1）16.4+3.5+83.6+166.5
=（16.4+83.6）+（3.5+166.5）
=100+170
=270；
（2）9.16-5.72-1.28
=9.16-（5.72+1.28）
=9.16-7
=2.16；
（3）64×12.5×0.25×0.05
=（2×4×8）×12.5×0.25×0.05
=（2×0.05）×（4×0.25）×（8×12.5）
=0.1×1×100
=10；
（4）312.5×12.3-312.5×6.9+312.5
=312.5×（12.3-6.9+1）
=312.5×6.4
=（300+12.5）×6.4
=300×6.4+12.5×6.4
=1920+80
=2000；
（5）
=
=
=
=
．
1
+2
+3
+…+97
+98
3
+5
+7
+…+195
+197
1
+2
+3
+…+97
+98
1
+2
+3
+…+97
+98
1
2 3 2 2 23 3 3+2
3 4 3 3 34 4 4+3
4 5 4 4 45 5 5+…+97
98 99 98 98 9899 99 99+98
99 100 99 99 99100 100 1003
+5
+7
+…+195
+197
3
+5
+7
+…+195
+197
3
1 3 1 1 13 3 3+5
2 4 2 2 24 4 4+7
3 5 3 3 35 5 5+…+195
97 99 97 97 9799 99 99+197
98 100 98 98 98100 100 100
=
=
=
=
．
+
+
+…+
+
+
+
+…+
+
+
+
+…+
+
+
+
+…+
+
5 3 5 5 53 3 3+
11 4 11 11 114 4 4+
19 5 19 19 195 5 5+…+
9701 99 9701 9701 970199 99 99+
9899 100 9899 9899 9899100 100 100
+
+
+…+
+
+
+
+…+
+
10 3 10 10 103 3 3+
22 4 22 22 224 4 4+
38 5 38 38 385 5 5+…+
19402 99 19402 19402 1940299 99 99+
19798 100 19798 19798 19798100 100 100
=
=
=
．
+
+
+…+
+
×2+
×2+
×2+…+
×2+
×2
+
+
+…+
+
+
+
+…+
+
5 3 5 5 53 3 3+
11 4 11 11 114 4 4+
19 5 19 19 195 5 5+…+
9701 99 9701 9701 970199 99 99+
9899 100 9899 9899 9899100 100 100
×2+
×2+
×2+…+
×2+
×2
×2+
×2+
×2+…+
×2+
×2
5 3 5 5 53 3 3×2+
11 4 11 11 114 4 4×2+
19 5 19 19 195 5 5×2+…+
9701 99 9701 9701 970199 99 99×2+
9899 100 9899 9899 9899100 100 100×2
=
=
．
+
+
+…+
+
(
+
+
+…+
+
)×2
+
+
+…+
+
+
+
+…+
+
5 3 5 5 53 3 3+
11 4 11 11 114 4 4+
19 5 19 19 195 5 5+…+
9701 99 9701 9701 970199 99 99+
9899 100 9899 9899 9899100 100 100(
+
+
+…+
+
)×2 (
+
+
+…+
+
)×2 (
5 3 5 5 53 3 3+
11 4 11 11 114 4 4+
19 5 19 19 195 5 5+…+
9701 99 9701 9701 970199 99 99+
9899 100 9899 9899 9899100 100 100)×2
=
．
1 2 1 1 12 2 2．
=（16.4+83.6）+（3.5+166.5）
=100+170
=270；
（2）9.16-5.72-1.28
=9.16-（5.72+1.28）
=9.16-7
=2.16；
（3）64×12.5×0.25×0.05
=（2×4×8）×12.5×0.25×0.05
=（2×0.05）×（4×0.25）×（8×12.5）
=0.1×1×100
=10；
（4）312.5×12.3-312.5×6.9+312.5
=312.5×（12.3-6.9+1）
=312.5×6.4
=（300+12.5）×6.4
=300×6.4+12.5×6.4
=1920+80
=2000；
（5）
1
| ||||||||||
3
|
=
| ||||||||||
|
=
| ||||||||||
|
=
| ||||||||||
(
|
=
| 1 |
| 2 |
1
| ||||||||||
3
|
| 2 |
| 3 |
| 3 |
| 4 |
| 4 |
| 5 |
| 98 |
| 99 |
| 99 |
| 100 |
| 1 |
| 3 |
| 2 |
| 4 |
| 3 |
| 5 |
| 97 |
| 99 |
| 98 |
| 100 |
| 2 |
| 3 |
| 3 |
| 4 |
| 4 |
| 5 |
| 98 |
| 99 |
| 99 |
| 100 |
| 2 |
| 3 |
| 3 |
| 4 |
| 4 |
| 5 |
| 98 |
| 99 |
| 99 |
| 100 |
| 2 |
| 3 |
| 3 |
| 4 |
| 4 |
| 5 |
| 98 |
| 99 |
| 99 |
| 100 |
| 1 |
| 3 |
| 2 |
| 4 |
| 3 |
| 5 |
| 97 |
| 99 |
| 98 |
| 100 |
| 1 |
| 3 |
| 2 |
| 4 |
| 3 |
| 5 |
| 97 |
| 99 |
| 98 |
| 100 |
| 1 |
| 3 |
| 2 |
| 4 |
| 3 |
| 5 |
| 97 |
| 99 |
| 98 |
| 100 |
=
| ||||||||||
|
=
| ||||||||||
|
=
| ||||||||||
(
|
=
| 1 |
| 2 |
| ||||||||||
|
| 5 |
| 3 |
| 11 |
| 4 |
| 19 |
| 5 |
| 9701 |
| 99 |
| 9899 |
| 100 |
| 10 |
| 3 |
| 22 |
| 4 |
| 38 |
| 5 |
| 19402 |
| 99 |
| 19798 |
| 100 |
| 5 |
| 3 |
| 11 |
| 4 |
| 19 |
| 5 |
| 9701 |
| 99 |
| 9899 |
| 100 |
| 5 |
| 3 |
| 11 |
| 4 |
| 19 |
| 5 |
| 9701 |
| 99 |
| 9899 |
| 100 |
| 5 |
| 3 |
| 11 |
| 4 |
| 19 |
| 5 |
| 9701 |
| 99 |
| 9899 |
| 100 |
| 10 |
| 3 |
| 22 |
| 4 |
| 38 |
| 5 |
| 19402 |
| 99 |
| 19798 |
| 100 |
| 10 |
| 3 |
| 22 |
| 4 |
| 38 |
| 5 |
| 19402 |
| 99 |
| 19798 |
| 100 |
| 10 |
| 3 |
| 22 |
| 4 |
| 38 |
| 5 |
| 19402 |
| 99 |
| 19798 |
| 100 |
=
| ||||||||||
|
=
| ||||||||||
(
|
=
| 1 |
| 2 |
| ||||||||||
|
| 5 |
| 3 |
| 11 |
| 4 |
| 19 |
| 5 |
| 9701 |
| 99 |
| 9899 |
| 100 |
| 5 |
| 3 |
| 11 |
| 4 |
| 19 |
| 5 |
| 9701 |
| 99 |
| 9899 |
| 100 |
| 5 |
| 3 |
| 11 |
| 4 |
| 19 |
| 5 |
| 9701 |
| 99 |
| 9899 |
| 100 |
| 5 |
| 3 |
| 11 |
| 4 |
| 19 |
| 5 |
| 9701 |
| 99 |
| 9899 |
| 100 |
| 5 |
| 3 |
| 11 |
| 4 |
| 19 |
| 5 |
| 9701 |
| 99 |
| 9899 |
| 100 |
| 5 |
| 3 |
| 11 |
| 4 |
| 19 |
| 5 |
| 9701 |
| 99 |
| 9899 |
| 100 |
| 5 |
| 3 |
| 11 |
| 4 |
| 19 |
| 5 |
| 9701 |
| 99 |
| 9899 |
| 100 |
| 5 |
| 3 |
| 11 |
| 4 |
| 19 |
| 5 |
| 9701 |
| 99 |
| 9899 |
| 100 |
=
| ||||||||||
(
|
=
| 1 |
| 2 |
| ||||||||||
(
|
| 5 |
| 3 |
| 11 |
| 4 |
| 19 |
| 5 |
| 9701 |
| 99 |
| 9899 |
| 100 |
| 5 |
| 3 |
| 11 |
| 4 |
| 19 |
| 5 |
| 9701 |
| 99 |
| 9899 |
| 100 |
| 5 |
| 3 |
| 11 |
| 4 |
| 19 |
| 5 |
| 9701 |
| 99 |
| 9899 |
| 100 |
| 5 |
| 3 |
| 11 |
| 4 |
| 19 |
| 5 |
| 9701 |
| 99 |
| 9899 |
| 100 |
| 5 |
| 3 |
| 11 |
| 4 |
| 19 |
| 5 |
| 9701 |
| 99 |
| 9899 |
| 100 |
| 5 |
| 3 |
| 11 |
| 4 |
| 19 |
| 5 |
| 9701 |
| 99 |
| 9899 |
| 100 |
| 5 |
| 3 |
| 11 |
| 4 |
| 19 |
| 5 |
| 9701 |
| 99 |
| 9899 |
| 100 |
| 5 |
| 3 |
| 11 |
| 4 |
| 19 |
| 5 |
| 9701 |
| 99 |
| 9899 |
| 100 |
=
| 1 |
| 2 |
| 1 |
| 2 |
看了 简便计算：16.4+3.5+...的网友还看了以下：
（1）923−9923+99923=（2）(38+16−29)×72=（3）4.9×512+4.9 2020-04-07 …
（2007•东城区）56-47=10-0.27=5-2.5=6.3+0.7=6÷0.5=8.4÷4 2020-04-07 …
[-17]+59+[-37]-[+5]+[-9]+[-4]-[-9][-17]+59+[-37]- 2020-06-06 …
脱式计算．20-[7.8+（6.2+1.29）]；9.4×[1.28-（1.54-0.31）]；1 2020-07-08 …
口算22×40=9+14=120÷6=300+400=56÷7=46+24=15+15=60×30 2020-07-09 …
列竖式计算．（打“☆”要验算）☆59÷4=83÷6=80÷5=☆76÷7=73÷9=☆65÷7=☆ 2020-07-17 …
估算．83×29≈90×11≈59÷5≈452÷9≈ 2020-07-17 …
先用计算器计算前三题的得数，再直接写出后面各题的得数．（1）6×9=6.6×6.9=6.66×66 2020-07-24 …
9×59表示9的59是多少9的59是多少，59÷5表示已知两个数的积是59，和其中的一个因数是5，求 2020-11-23 …
0.31+6.59+3.41+9.69=（0.31+9.69）+（6.59+3.41）是应用律和律进 2020-11-27 …