98+97+99+94+90的简便计算

2024-12-29 16:06:36
推荐回答(5个)
回答1:


简便运算

回答2:


478

回答3:

98+97+99+94+90=478

回答4:

=100X4-2-3-1-6+90
=500-12+90
=590-10-2
=580-2
=578

回答5:

=90×5+8+7+9+4
=450+28
=478