Tính nhanh a) (2736-75)-2736 b) (-2020)-(-57-2020) c) 4573 +46-4573+35-16-5 d) 32+34+36+38-10-12-14-16-16-8 01/08/2021 Bởi Allison Tính nhanh a) (2736-75)-2736 b) (-2020)-(-57-2020) c) 4573 +46-4573+35-16-5 d) 32+34+36+38-10-12-14-16-16-8
a) (2736-75)-2736 = 2736-2736-75 = -75 b) (-2020)-(-57-2020) = -2020+57+2020 = -2020+2020+57 = 57 c) 4573 +46-4573+35-16-5 = (4573-4573)+(46-16)+(35-5) = 30+30 = 60 d) 32+34+36+38-10-12-14-16-16-8 = (32-16-16)+(34-12-8-14)+(36-10)+38 = 26+38 = 64 Bình luận
Cho mk hay nhất nhé
a) (2736-75)-2736
= 2736-2736-75
= -75
b) (-2020)-(-57-2020)
= -2020+57+2020
= -2020+2020+57
= 57
c) 4573 +46-4573+35-16-5
= (4573-4573)+(46-16)+(35-5)
= 30+30
= 60
d) 32+34+36+38-10-12-14-16-16-8
= (32-16-16)+(34-12-8-14)+(36-10)+38
= 26+38
= 64