7.3×4.5-4.5 5.9×10.1 这两道题用简便运算怎么算?
7.3×4.5-4.5 5.9×10.1 这两道题用简便运算怎么算?
7.3×4.5-4.5
=(7.3-1)×4.5
=6.3×4.5
=28.35
5.9×10.1
=5.9×10+5.9×0.1
=59+0.59
=59.59
4.5-4.5*0.22怎么简便运算
4.5-4.5*0.22
=4.5*(1-0.22)
=4.5*0.78
=3.51
4.5*7.3+2.7*4.5简便运算
4.5*7.3+2.7*4.5
=4.5*(7.3+2.7)
=4.5*10
=45
这两道题怎么做、简便运算
25x[68÷(4+13)]
=25x(68÷17)
=25x4
=100
(196+180)÷(72÷9)
=376÷8
=(320+56)÷8
=320÷8+56÷8
=40+7
=47
求这两道题的简便运算
404×25
=(400+4)×25
=400×25+4×25
=10000+100
=10100
79×16+79×78+79×6
=79×(16+78+6)
=79×100
=7900
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两道题怎么简便运算
=(87+1)X5/8
=88X5/8
=55
=8/13X(39+1)
=8/13 X39+8/13 X1
=24+8/13
=24又8/13
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这两道题的简便运算,谢谢
1919=19*101,191919=19*10101……(9个19)=19*(8个10)1,那么原式可以化为:
[1/19}+[2/19]+[3/19]……+[9/19]=45/19
20052005=5*10001*401,121=11*11,11111111=11*101*10001,那么原式=55/101
4.5×4.5÷4.5×4.5怎么简便运算啊
4.5×4.5÷4.5×4.5
=4.5×(4.5÷4.5)×4.5
=4.5x1x4.5
=20.25
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4.5*2.5+10.75 这道题的简便运算
4.5*2.5+10.75
=2.5*(4+0.5)+10.75
=2.5*4+0.5*2.5+10.75
=10+1.25+10.75
=10+12
=22
问一下这两道题怎么简便运算
[0.45+(8.8-8)]×1.6
=[0.45+0.8]×1.6
=1.25×8×0.2
=10×0.2
=2
9/36÷[3/4-(7/16-1/4)]
=9/36÷[3/4+1/4-7/16]
=9/36÷9/16
=4/9