17.58-(7.58-2.3)简便计算
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17.58-(7.58-2.3)=(17.58-7.58)+2.3
咨询记录 · 回答于2023-05-06
17.58-(7.58-2.3)简便计算
17.58-(7.58-2.3)=(17.58-7.58)+2.3
17.58-(7.58-2.3)简便计算=(17.58-7.58)+2.3=10+2.3=12.3
17.58-(7.58-2.3)=(17.58-7.58)+2.3=10+2.3=12.3
13.72+5.71+3.28+4.29简便运
13.72+5.71+3.28+4.29
简便运算
五点8+2点3+4点2+2点七简便运算
13.72+5.71+3.28+4.29=(13.72+3.28)+(5.71)
13.72+5.71+3.28+4.29=(13.72+3.28)+(5.71+4.29)=17+10=27
5.8+2.3+4.2+2.7,简便计算
【数学基础题解答】https://mbd.baidu.com/ma/s/PuWnJ0HN。
5.8+2.3+4.2+2.7=5.8+4.2+2.3+2.7=10+5=15
5.8+2.3+4.2+2.7,简便计算5.8+2.3+4.2+2.7=5.8+4.2+2.3+2.7=10+5=15
6.28×3.4+6.28×6.6,简便计算
6.28×3.4+6.28×6.6=62.8
6.28×3.4+6.28×6.6=6.28x(3.4x6.6)=6.28x10=62.8
2.5×(8+0.4)简便计算
2.5×(8+0.4)简便计算
简便计算2.5×(8+0.4)=2.5x8+2.5x0.4=20+1=21