| 用递等式计算,能简便计算的要用简便方法计算。 | ||||||
|
(1)![]() = ![]() = ![]() = ![]() | (2)4.89×6.3+48.9×0.37 =4.89×6.3+4.89×3.7 =4.89×(6.3+3.7) =48.9 |
(3)![]() = ![]() = ![]() = ![]() | (4)![]() =(2.5×0.4)× ![]() =1×1 =1 |
| (5)158-92+42-8 =(158+42)-(92+8) =200-100 =100 | (6)83.2÷(83.2÷11) =83.2÷83.2×11 =1×11 =11 |
编辑:chaxungu时间:2026-04-27 13:19:12分类:小学数学题库
| 用递等式计算,能简便计算的要用简便方法计算。 | ||||||
|
(1)![]() = ![]() = ![]() = ![]() | (2)4.89×6.3+48.9×0.37 =4.89×6.3+4.89×3.7 =4.89×(6.3+3.7) =48.9 |
(3)![]() = ![]() = ![]() = ![]() | (4)![]() =(2.5×0.4)× ![]() =1×1 =1 |
| (5)158-92+42-8 =(158+42)-(92+8) =200-100 =100 | (6)83.2÷(83.2÷11) =83.2÷83.2×11 =1×11 =11 |