递等式计算(能简算的要简算)①14 7 20 ÷7②4265+660÷15-36×59③(4 1 5 -0.0

2025-02-26 13:28:25
推荐回答(1个)
回答1:

①14
7
20
÷7
=14
7
20
×
1
7

=(14×
1
7
)+(
7
20
×
1
7

=2+
1
20

=2
1
20

②4265+660÷15-36×59
=4256+44-2124
=4300-2124
=2176;
③(4
1
5
-0.005×800)÷1
1
7

=(4
1
5
-4)÷1
1
7

=
1
5
×
7
8

=
7
40

④266.5÷(2
3
14
×7-5
1
4

=266.5÷(2×7+
3
14
×7-5
1
4

=266.5÷(15
1
2
-5
1
4

=266.5÷10.25(或
533
2
÷
41
4

=26.