求0.9乘8.4加1乘0.84 72乘1.25 0.36乘2.4加76乘0.036 125.125乘8加24.75乘4 7.68减3.56加2.32减5.4478.4减31.94减18.06 2.61 乘39.5加0.318乘261加2.87乘26.1的简便运算
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![求0.9乘8.4加1乘0.84 72乘1.25 0.36乘2.4加76乘0.036 125.125乘8加24.75乘4 7.68减3.56加2.32减5.4478.4减31.94减18.06 2.61 乘39.5加0.318乘261加2.87乘26.1的简便运算](/uploads/image/z/27111-39-1.jpg?t=%E6%B1%820.9%E4%B9%988.4%E5%8A%A01%E4%B9%980.84+72%E4%B9%981.25+0.36%E4%B9%982.4%E5%8A%A076%E4%B9%980.036+125.125%E4%B9%988%E5%8A%A024.75%E4%B9%984+7.68%E5%87%8F3.56%E5%8A%A02.32%E5%87%8F5.4478.4%E5%87%8F31.94%E5%87%8F18.06++++++++++++++2.61+%E4%B9%9839.5%E5%8A%A00.318%E4%B9%98261%E5%8A%A02.87%E4%B9%9826.1%E7%9A%84%E7%AE%80%E4%BE%BF%E8%BF%90%E7%AE%97)
求0.9乘8.4加1乘0.84 72乘1.25 0.36乘2.4加76乘0.036 125.125乘8加24.75乘4 7.68减3.56加2.32减5.4478.4减31.94减18.06 2.61 乘39.5加0.318乘261加2.87乘26.1的简便运算
求0.9乘8.4加1乘0.84 72乘1.25 0.36乘2.4加76乘0.036 125.125乘8加24.75乘4 7.68减3.56加2.32减5.44
78.4减31.94减18.06 2.61 乘39.5加0.318乘261加2.87乘26.1的简便运算
求0.9乘8.4加1乘0.84 72乘1.25 0.36乘2.4加76乘0.036 125.125乘8加24.75乘4 7.68减3.56加2.32减5.4478.4减31.94减18.06 2.61 乘39.5加0.318乘261加2.87乘26.1的简便运算
0.9乘8.4加1乘0.84
=9×0.84+0.84
=(9+1)×0.84
=10×0.84
=8.4
72乘1.25
=9*(8*1.25)
=9*10
=90
0.36乘2.4加76乘0.036
=0.36×2.4+7.6×0.36
=0.36×(2.4+7.6)
=0.36×10
=3.6
125.125乘8加24.75乘4
=250.25×4+24.75×4
=(250.25+24.75)×4
=300×4
=1200
7.68减3.56加2.32减5.44
=(7.68+2.32)-(3.56+5.44)
=10-9
=1
=
78.4减31.94减18.06
=78.4-(31.94+18.06)
=78.4-50
=28.4
2.61 乘39.5加0.318乘261加2.87乘26.1
=2.61×39.5+31.8×2.61+28.7×2.61
=2.61×(39.5+31.8+28.7)
=2.61×100
=261