34Ã3.535-3.5Ã34.34
=34Ã3.5Ã1.01-3.5Ã34Ã1.01
=0
8+89+899+8999+89999
=9+90+900+9000+90000-5
=99999-5
=99994
0.67Ã2.1+0.018Ã21+8.5Ã0.79
=0.67Ã2.1+0.18Ã2.1+8.5Ã0.79
=(0.67+0.18)Ã2.1+8.5Ã0.79
=0.85Ã2.1+0.85Ã7.9
=0.85Ã(2.1+7.9)
=0.85Ã10
=8.5
22222.2Ã9.99999
=22222.2Ã(10-0.00001)
=222222-0.222222
=222221.777778
1997Ã19961996-1996Ã19971997
=1997Ã1996Ã10001-1996Ã1997Ã10001
=0
0.02+0.04+0.06+0.08+â¦â¦+19.94+19.96+19.98
=(0.02+19.98)Ã999÷2
=10Ã999
=9990
99999Ã77778+33333Ã66666
=99999Ã77778+99999Ã22222
=99999Ã(77778+22222)
=99999Ã100000
=9999900000
(4å5/6-3å3/4)/(3/14+2/7)
=13/12÷1/2
=13/6
=2å1/6
(4.8/1å4/5+3å1/2+7å1/3)*4/9
=(2å2/3+7å1/3+3.5)*4/9
=(10+3.5)*4/9
=13.5*4/9
=6
17.2/ã(3å2/5-1.25)*2/3ã
=17.2/ã2.15*2/3ã
=17.2÷43/3
=1.2
5*5å1/5
=5*5+5*1/5
=25+1
=26
(5å2/5-1.8)/[(1.15+13/20)*1å2/3]
=3.6/[1.8*5/3]
=3.6/3
=1.2
3å5/8*5å1/5+5å1/5*6å3/8
=5.2*(3å5/8+6å3/8)
=5.2*10
=52
[3/4-7/8/(5/6+4/5)]*28
=[3/4-7/8÷49/30]*28
=[3/4-15/28]*28
=3/4*28-15/28*28
=21-15
=6
(1.25*4/5-0.76)/(1å3/8+1å1/40)
=(1-0.76)/2.4
=0.24/2.4
=0.1
[(0.2+1/3)*4.5]/(8å1/20-6.45)
=8/15*4.5/1.6
=2.4/1.6
=1.5
(4å6/7+1.75)/1å11/14+3å5/6
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