Question

这些题都要简算谢谢了

Answer 1

2.5×36
=2.5×4×9
=10×9
=90

追答

45×0.99
=45×1-45×0.01
=45-0.45
=44.55

2014×2012/2013
=(2013+1)×2012/2013
=2013×2012/2013+1×2012/2013
=2012+1012/2013
=2012又2012/2013

10-5/7-2/7
=10-(5/7+2/7)
=10-1
=9

0.125×56×8
=0.125×8×56
=1×56
=56

(1/15+2/17)×15×17
=1/15×15×17+2/17×17×15
=17+30
=47

7/8×12/13+7/8÷13
=7/8×12/13+7/8×1/13
=7/8×(12/13+1/13)
=7/8×1
=7/8

3.5×0.8+5.5×0.8+0.8×11
=0.8×(3.5+5.5+11)
=0.8×20
=16

Answer 2