| 脱式计算,能简算的要简算。 | ||||||
|
| (1)1723-1152÷32 =1723-36 =1687 | (2)21.38-(1.38+0.46) =21.38-1.38-0.46 =20-0.46 =19.54 |
(3)38× +62×![]() = ×(38+62)= ×100=6 ![]() | (4) ×[ -( - )]= ×[( + )- ]= ×(1- )= ×![]() = ![]() |
(5)0.5÷[( - )×3]=0.5÷( ×3)=0.5÷ ![]() =1 | (6)解方程: x+ x=![]() 解:( + )x= x= x= ![]() |
编辑:chaxungu时间:2026-04-27 13:38:11分类:小学数学题库
| 脱式计算,能简算的要简算。 | ||||||
|
| (1)1723-1152÷32 =1723-36 =1687 | (2)21.38-(1.38+0.46) =21.38-1.38-0.46 =20-0.46 =19.54 |
(3)38× +62×![]() = ×(38+62)= ×100=6 ![]() | (4) ×[ -( - )]= ×[( + )- ]= ×(1- )= ×![]() = ![]() |
(5)0.5÷[( - )×3]=0.5÷( ×3)=0.5÷ ![]() =1 | (6)解方程: x+ x=![]() 解:( + )x= x= x= ![]() |