问题
解答题
计算: ①(-36)×﹙
②-42×
|
答案
①原式=-36×
+36×1 2
-36×5 9 7 12
=-18+20-21
=-19;
②原式=-16×
-5×(-64)×5 8
×1 4
×1 4 1 4
=-10+5
=-5.
计算: ①(-36)×﹙
②-42×
|
①原式=-36×
+36×1 2
-36×5 9 7 12
=-18+20-21
=-19;
②原式=-16×
-5×(-64)×5 8
×1 4
×1 4 1 4
=-10+5
=-5.