题目
计算题
(1)
﹣24+(﹣16)﹣(﹣18)﹣13
(2)
(3)
﹣22÷(﹣4)3+|0.8﹣1|×
(4)
99 ×49
答案: 解:﹣24+(﹣16)﹣(﹣18)﹣13 =﹣24﹣16+18﹣13 =﹣53+18 =﹣35
解: (23−1112−1415)×(−60) = 23 ×(﹣60)﹣ 1112 ×(﹣60)﹣ 1415 ×(﹣60) =﹣40+55+56 =71
解:﹣22÷(﹣4)3+|0.8﹣1|× (212)2 =﹣4÷(﹣64)+0.2× 254 = 116 + 54 =1 516
解:99 9798 ×49 =(100﹣ 198 )×49 =100×49﹣ 198 ×49 =4900﹣ 12 =4899 12