Question

这三道题？

Answer 1

15.36一(6.3一4.64)
=15.36十4 .64一6.3
=2O一6.3=13.7

追答

5.9+O.2一5.9+O.2
＝5.9一5.9+O.2十0.2
=O.4

33.28一19.41一2O.59十16.72
=(33.28十16.72)一(19.41+2O.59)
=5O一4O=1O

追问

两个，我就给

Answer 2

15.36一(6.3一4.64)=15.36一6.3+4.64=20一6.3=13.7
5.9+0.2一5.9十0.2=0.2十0.2=0.4
33.28一19.41一20.59十16.72=33.28+16.72一(19.41+20.59)=50一40=10