题目内容
| 递等式计算. 427-256+149 | 510÷5÷2 | 639÷3+48 |
| 540÷(2×3) | (910-485)÷5 | 736-642÷6 |
| 927÷(501-492) | 540-62×8 | 108×3÷9. |
(1)427-256+149
=171+149
=320
(2)510÷5÷2
=510÷(5×2)
=510÷10
=51
(3)639÷3+48
=213+48
=261
(4)540÷(2×3)
=540÷6
=90
(5)(910-485)÷5
=425÷5
=85
(6)736-642÷6
=736-107
=629
(7)927÷(501-492)
=927÷9
=103
(8)540-62×8
=540-496
=44
(9)108×3÷9
=324÷9
=36
=171+149
=320
(2)510÷5÷2
=510÷(5×2)
=510÷10
=51
(3)639÷3+48
=213+48
=261
(4)540÷(2×3)
=540÷6
=90
(5)(910-485)÷5
=425÷5
=85
(6)736-642÷6
=736-107
=629
(7)927÷(501-492)
=927÷9
=103
(8)540-62×8
=540-496
=44
(9)108×3÷9
=324÷9
=36
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