问题 填空题

观察例题→发现规律→按照要求答题.

(120×120)-(119×121)=1,(120×120)-(118×122)=4,

(120×120)-(117×123)=9,(120×120)-(116×124)=16,

(1)(120×120)-(112×128)=______.

(2)(120×120)-(______×______)=144.

答案

(120-112)×(128-120)=8×8=64;

12×12=144,

120-12=108,

120+12=132,

120×120-108×132=144;

故答案为:64,108,132.

选择题
单项选择题