Question

（7/8-3/2）*24简便计算

9/11×(22/15+11/8)
5/8×（15/4-15/16)
3/4×25-1/8÷1/8 能简便的要简便

Answer 1

解：（7/8-3/2）*24

=7/8*24-3/2*24

=21-36

=-5

解：9/11×(22/15+11/8)

=9/11*22/15+9/11*11/8

=6/5+9/8

=(48+45)/40

=93/40

解：5/8×（15/4-15/16)

=5/8*(60/16-15/16)

=5/8*45/16

=225/128

解：3/4×25-1/8÷1/8

=3/4*25-1/8*8

=0.75*25-1

=18.75-1

=17.75

Answer 2

(7/8-3/2）*24
=7/8*24-3/2*24
=21-36
=-15

9/11×(22/15+11/8)
=9/11×22/15+9/11×11/8
=6/5+9/8
=48/40+45/40
=93/40

5/8×（15/4-15/16)
=5/8×(60/16-15/16)
=5/8×45/16
=225/128

3/4×25-1/8÷1/8
=75/4-1
=75/4-4/4
=71/4

Answer 3

72*24

Answer 4

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