来自陈修环的问题
(2.8+6.2)×0.3○2.8×0.3+6.2×0.3○里应填()A.<B.>C.=D.≈
(2.8+6.2)×0.3○2.8×0.3+6.2×0.3○里应填()
A.<
B.>
C.=
D.≈
1回答
2020-05-24 21:02
(2.8+6.2)×0.3○2.8×0.3+6.2×0.3○里应填()A.<B.>C.=D.≈
(2.8+6.2)×0.3○2.8×0.3+6.2×0.3○里应填()
A.<
B.>
C.=
D.≈
(2.8+6.2)×0.3
=9×0.3
=2.7;
2.8×0.3+6.2×0.3
=0.84+1.86
=2.7;
所以,(2.8+6.2)×0.3=2.8×0.3+6.2×0.3.
故选:C.