3.4×7.1+3.4简便计算
来源:学生作业帮助网 编辑:作业帮 时间:2024/11/18 19:28:00
3.4×0.99=3.4x(1-0.01)=3.4x1-3.4x0.01=3.4-0.034=3.366
3.4*20.1+0.66*201=3.4×20.1+6.6×20.1=20.1×(3.4+6.6)=20.1×10=201
再问:9.2乘0.71加3.04再答:
3.4✘1.5✘7
34*0.277+023*3.4=3.4*2.77+0.23*3.4=3.4*(2.77+0.23)=3.4*3=10.2
17-31.2/(8.2-3.4)=17-31.2/4.8=17-6.5=10.5再问:O(∩_∩)O谢谢,不过好像这不是简便计算吧?再答:这样算也不麻烦啊再问:那1.8/2.4*4.6呢?这样简便计
19.52-(9.52+3.4)=19.52-9.52-3.4=10-3.4=6.6
3.4×99.9=3.4×(100-0.1)=3.4×100-3.4×0.1=340-0.34=339.66
请问3.4与1.7之间是什么再问:28.3-3.471.7-19.6再答:28.3-3.4=28.3-3.3-0.1=25-0.1=24.971.7-19.6=71.6-19.6+0.1=52+0.1
5.4×0.68+3.4×2×0.46=5.4×0.68+6.8×0.46=0.54×6.8+6.8×0.46=6.8×(0.54+0.46)=6.8
19.43-4.6+3.4=19.43-(4.6-3.4)=19.43-1.2=18.2314.8-9.99=14.8-10+0.01=4.8+0.01=4.81
=9.07-6.7=2.37
=15.6×3.4+15.6×6.6=15.6×(3.4+6.6)=15.6×10=156
3.4×98+6.83.4×98+3.4×2=3.4×(98+2)=3.4×100=340
6.8*3.4+15.9*3.2=(10-3.2)*3.4+15.9*3.2=10*3.4+(15.9-3.4)*3.2=34+12.5*3.2=74
4.5×3.4+45×0.34+3.4=3.4*(4.5+4.5+1)=10*3.4=34
9.7-22.78÷3.4+3.7=9.7-6.7+3.7=3+3.7=6.7
3.4*7*1.5=1.7*2*7*1.5=1.7*7*(2*1.5)=7*(1.7*3)=7*5.1=7*5+7*0.1=35.7
3.4×99+3.4=3.4×(99+1)=3.4×100=340
9.207-22.78/3.4=9.207-(23.8-1.02)/3.4=9.207-23.8/3.4+1.02/3.4=9.207-7+0.3=2.507