11×40+8×11+39×48和550÷121×11 简便计算(这是两道题,分开写简便方法)
问题描述:
11×40+8×11+39×48和550÷121×11 简便计算(这是两道题,分开写简便方法)
答
11×40+8×11+39×48
=11x(40+8)+39x48
=48x(11+39)
=48x50
=2400
550÷121×11
=550÷(121÷11)
=550÷11
=50