| 看谁算得快。 | |||
|
| (1)720÷[(12+24)×20] =720÷(36×20) =720÷720 =1 | (2)[(280+140)÷70]×20 =420÷70×20 =6×20 =120 | (3)640÷[(96-80)÷4] =640÷(16÷4) =640÷4 =160 |
编辑:chaxungu时间:2026-04-27 13:23:09分类:小学数学题库
| 看谁算得快。 | |||
|
| (1)720÷[(12+24)×20] =720÷(36×20) =720÷720 =1 | (2)[(280+140)÷70]×20 =420÷70×20 =6×20 =120 | (3)640÷[(96-80)÷4] =640÷(16÷4) =640÷4 =160 |