脱式计算。 4.2×1.6+4.05÷2.7 3.5×1.4+9.45÷4.5
答案:3 悬赏:80 手机版
解决时间 2021-11-15 06:03
- 提问者网友：杀生予夺
- 2021-11-14 23:57
脱式计算。 4.2×1.6+4.05÷2.7 3.5×1.4+9.45÷4.5
最佳答案
- 五星知识达人网友：人间朝暮
- 2021-11-15 00:18
4.2×1.6+4.05÷2.7
=6.72 + 1.5
=8.22
3.5×1.4+9.45÷4.5
=4.9+2.1
= 7
5.46÷4.2－0.69
= 1.3 -0.69
=0.61
（3.5+1.3）÷0.3
= 4.8÷0.3
=16
5.1÷（0.5+0.2×6）
=5.1÷（0.5+1.2)
=5.1÷1.7
=3
=6.72 + 1.5
=8.22
3.5×1.4+9.45÷4.5
=4.9+2.1
= 7
5.46÷4.2－0.69
= 1.3 -0.69
=0.61
（3.5+1.3）÷0.3
= 4.8÷0.3
=16
5.1÷（0.5+0.2×6）
=5.1÷（0.5+1.2)
=5.1÷1.7
=3
全部回答
- 1楼网友：神也偏爱
- 2021-11-15 02:04
- 2楼网友：野慌
- 2021-11-15 01:35
4.2×1.6+4.05÷2.7 =4.2×1.5+0.42+（2.7+1.35）÷2.7=6.3+0.42+1.5=6.3+1.92=8.22
3.5×1.4+9.45÷4.5=7×0.7+2.1=4.9+2.1=7
5.46÷4.2－0.69=（4.2+1.26）÷4.2-0.69=1.3-0.69=0.61
（3.5+1.3）÷0.3=4.8÷0.3=16
5.1÷（0.5+0.2×6）=5.1÷1.7=3
3.5×1.4+9.45÷4.5=7×0.7+2.1=4.9+2.1=7
5.46÷4.2－0.69=（4.2+1.26）÷4.2-0.69=1.3-0.69=0.61
（3.5+1.3）÷0.3=4.8÷0.3=16
5.1÷（0.5+0.2×6）=5.1÷1.7=3
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