问题 解答题
递等式计算.
427-256+149
510÷5÷2639÷3+48
540÷(2×3)(910-485)÷5736-642÷6
927÷(501-492)540-62×8108×3÷9.
答案

(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

材料分析题
单项选择题 B1型题