1.87×9.9+0.187 4.2×99+4.2 27.5×3.7_7.5×3
答案:2 悬赏:30 手机版
解决时间 2021-03-25 18:52
- 提问者网友:回忆在搜索
- 2021-03-25 00:59
1.87×9.9+0.187 4.2×99+4.2 27.5×3.7_7.5×3
最佳答案
- 五星知识达人网友:青尢
- 2021-03-25 01:55
1.87×9.9+0.187
=1.87×9.9+1.87×0.1
=1.87×(9.9+0.1)
=1.87×10
=18.7
4.2×99+4.2
=4.2×(99+1)
=420
27.5×3.7-7.5×3.7
=(27.5-7.5)×3.7
=20×3.7
=74
0.65×101
=0.65×100+0.65
=65.65
3.2×0.25×12.5
=3.2÷4×12.5
=0.8×12.5
=10
7.2×0.2+2.4×1.4
=2.4×3×0.2+2.4×1.4
=2.4×(0.6+1.4)
=4.8
=1.87×9.9+1.87×0.1
=1.87×(9.9+0.1)
=1.87×10
=18.7
4.2×99+4.2
=4.2×(99+1)
=420
27.5×3.7-7.5×3.7
=(27.5-7.5)×3.7
=20×3.7
=74
0.65×101
=0.65×100+0.65
=65.65
3.2×0.25×12.5
=3.2÷4×12.5
=0.8×12.5
=10
7.2×0.2+2.4×1.4
=2.4×3×0.2+2.4×1.4
=2.4×(0.6+1.4)
=4.8
全部回答
- 1楼网友:底特律间谍
- 2021-03-25 02:04
1、1.87*9.9+1.87*0.1=1.87*10=18.7
2、4.2*100=42
3、你那是减号吧(๑´ㅂ`๑) 74
4、60+0.65=60.65
5、4*0.25*0.8*12.5=1*10=10
6、2.4*3*0.2+2.4*1.4=2.4*(0.6+1.4)=2.4*2=4.8
2、4.2*100=42
3、你那是减号吧(๑´ㅂ`๑) 74
4、60+0.65=60.65
5、4*0.25*0.8*12.5=1*10=10
6、2.4*3*0.2+2.4*1.4=2.4*(0.6+1.4)=2.4*2=4.8
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