先找规律,再填一填.
(1)110+120+130+140+150= ×
(2)220+230+240+250= ×
(3)343+345+347+349+351= ×
(4)115+120+125+130+135+140+145= × .
先找规律,再填一填.
(1)110+120+130+140+150= ×
(2)220+230+240+250= ×
(3)343+345+347+349+351= ×
(4)115+120+125+130+135+140+145= × .