2.9-(1.9+0.8) 4.32+17.61+5.68+2.39 37.4×10.1 5.7+
2.9-(1.9+0.8) 4.32+17.61+5.68+2.39 37.4×10.1 5.7+
5.2*99 简便计算 9-7.2-0.8简便计算 37.4*10.1简便计算 2.9-(1.9+0.8)
简便运算:18.1-5.7-4.3+1.9
5.68×4+4.32÷0.25简便计算
(13)计算:8.1×1.3-8/1.3+1.9×1.3+11.9/1.3
相反数的多重符号化简要这些题的答案 +[-(-10)] -(+10.1) +(+7) 就这么多 谢谢啦
10-9.8+9.6-9.4+9.2-9+...+0.8-0.6+0.4-0.2
0.45×[4.85÷﹙3.8÷1.9)+3.6-1.56×2.07]=
8/5×5.3+5.7×8/5-0.625
(9999+9997+.+9001)-(1+3+.+999)
(+1)+(-2)+(+3)+(-4)++(+99)+(-100)等于几?
计算:(+1)+(-3)+(+5)+(-7)+⋯+(+97)+(-99)