A, 1,5678:2,34×50-65=………
B, 25,75-(43-400×0,1+300×0,01)=……
C, 6,778×99+6,778
A, 1,5678:2,34×50-65=……… B, 25,75-(43-400×0,1+300×0,01)=…… C, 6,778×99+6,778
By Ximena
By Ximena
A, 1,5678:2,34×50-65=………
B, 25,75-(43-400×0,1+300×0,01)=……
C, 6,778×99+6,778
Đáp án:
Giải thích các bước giải:
a, 1,5678:2,34×50-65
=0,67×50-65
=33,5-65
=-31,5
b, 25,75-(43-400×0,1+300×0,01)
=25,75-(43-40+3)
=25,75-(3+3)
=25,75-6
=19,75
c, 6,778×99+6,778
=6,778×(99+1)
=6,778×100
=677,8
Đáp án:a 1.5678 : 2,34 ×50 – 65= -31,5
B 25,75 -(43-400×0,1+300×0,01)= -23.107
C 6,778×99+6,778= 6,778
Nhớ cho mình sao nha cảm ơn
Giải thích các bước giải: