直接写出得数.= 15= = =0.33= = = =1﹣= = = =
6×= ×= ×3= += ×= ×=
直接写得数.①4×= ②×= ③×28= ④﹣=⑤7×= ⑥0×= ⑦+= ⑧×=⑨×= ⑩×= (11)1×= (12)0.125×8=
直接写得数:15× × × × ×121 ×.
直接写出得数.×= ×= ×=×28= += (+)×12=
直接写得数×60 × 1﹣ × ×0 ×.