用合适的方法计算下面各题 9.54-0.88+0.45=________ | 3.5-0.24-0.36=________ | 945÷(3×3)=________ |
31+45+54+69=________ | 400×6×18=________ | (78+69)÷7=________. |
用合适的方法计算下面各题 9.54-0.88+0.45=________ | 3.5-0.24-0.36=________ | 945÷(3×3)=________ |
31+45+54+69=________ | 400×6×18=________ | (78+69)÷7=________. |