(1) 23+64×20(2) 12×(280-80÷4)
=87×20 =12×(200÷4)
=1740 =12×50
=600
( ) ( )
改错:改错:
| (1)× 23+64×20 =23+1280 =1303 | (2)× 12×(280-80÷4) =12×(280-20) =12×260 =3120 |
编辑:chaxungu时间:2026-04-27 13:25:38分类:小学数学题库
| (1)× 23+64×20 =23+1280 =1303 | (2)× 12×(280-80÷4) =12×(280-20) =12×260 =3120 |