(3.75×1又5分之3—3又10分之3)÷10分之9 [4又7分之5―(7分之5+1又4分之3×2)]÷2.5
1个回答

(3.75×1又5分之3—3又10分之3)÷10分之9

=((15/4)×(8/5)-33/10)×(10/9)

=(6-33/10)×(10/9)

=(27/10)×(10/9)

=3;

[4又7分之5―(7分之5+1又4分之3×2)]÷2.5

=(4+5/7-5/7-(7/4)×2)÷2.5

=(4-7/2)÷2.5

=0.5÷2.5

=0.2;

99.99×2.8+0.01×2.8

=2.8×(99.99+0.01)

=2.8×100

=280;

13分之8÷10分之9×11分之4÷9分之5×2分之11÷13分之4

=(8/13)×(10/9)×(4/11)×(9/5)×(11/2)×(13/4)

=2×2×2

=8;

5分之4×11分之4+11分之5×5分之4

=(4/5)×(4/11+5/11)

=(4/5)×(9/11)

=36/55;

(3分之1+9分之4)×36

=36×(1/3)+36×(4/9)

=12+16

=28;

3分之2×[(8分之5+4分之3)÷8分之5]

=(2/3)×(1+6/5)

=(2/3)×(11/5)

=22/15;

很高兴为您解答,skyhunter002为您答疑解惑

如果本题有什么不明白可以追问,