来自刘从洪的问题
利用简便方法计算.3.74×2.85+8.15×3.74-3.74;99.99×0.8+11.11×2.8;31.4×0.68+314×0.032;3.46×(2.8-1.3)+1.5×1.54;22.8×98+45.6;999.9×0.28+0.6666×80;5.2×11111+66666×0.8;20.05×39+200.5×4.1+40×10.025
利用简便方法计算.
3.74×2.85+8.15×3.74-3.74;
99.99×0.8+11.11×2.8;
31.4×0.68+314×0.032;
3.46×(2.8-1.3)+1.5×1.54;
22.8×98+45.6;
999.9×0.28+0.6666×80;
5.2×11111+66666×0.8;
20.05×39+200.5×4.1+40×10.025.
1回答
2020-04-07 11:06