计算下列题（简算）
计算下列题（简算）
5/8*7.2+3/8*7.2=7.2 3.5除[(1-1/2)*1.4]=5 3/7除[(2/3-1/2)*6/7]=3
1/6*2/3除(4/5-8/12)=5/6 (64*3/8+76)除5/12=240 4/9除(1/3+1/6)*3/4 =2/3
计算下列题（要求：必须简算）
2又四分之三就是2.75
2.7*2.75+6.3*2.75+2.75
=2.75*(2.7+6.3+1)
=2.75*10
=27.5
简算下列题：
0.5*2.5*96*0＝0.5*2.5*12*(8*0.125)
=0.5*(2.5*4)*3
=15
简算下列题目
999.3-998.2+997.3-996.2+···+3.3-2.2+1.3-0.2
=(999.3-998.2)+(997.3-996.2)+……+(3.3-2.2)+(1.3-0.2)
=1.1+1.1+……+1.1+1.1
=1.1x500
=550
(1+1/2)*(1+1/4)*(1+1/6)···*(1+1/10）*（1-1/3）*（1-1/5）*···*（1-1/9）
(1+1/2)x(1-1/3)=1
(1+1/4)x(1-1/5)=1
(1+1/2)x(1+1/4)x(1+1/6)x...x(1+1/10)x(1-1/3)x(1-1/5)x..x(1-1/9)=1
5.65*0.875+9/8*5.35-0.875*0.9
=5.65*0.875+1.125*5.35-0.875*0.9
=5.65*0.875-0.875*0.9+1.125*5.35
=0.875*（5.65-0.9）+0.875*5.35+0.25*5.35
=0.875*4.75+（4.75*1.125+0.6*1.125）
=4.75*（0.875+1.125）+0.6*1.125
=4.75*2+0.6*1.125
=19/4*2+6/10*9/8
=9.5+0.625
=10.125
2/5*[2.6+3/4-(0.65+3/4)]/3/4
=2/5*[2.6+0.75-(0.65+0.75)]/3/4
=2/5*(3.35-1.4)/3/4
=2/5*1.95/3/4
=2/5*39/20÷3/4
=26/25
计算下列题
（1）
√8÷√18
=2√2÷3√2
=2/3
(2)
2√5分之4√15
=4√15/(2√5)
=2√3
(3)
√27×√50÷√6
=3√3×5√2÷√6
=15√6÷√6
=15
(4)
3√40分之√2
=√2/(3√40)
=1/(3√20)
=1/(6√5)
=√5/30
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√54×√27= √2x√27×√27=27√2
√6×（-√15）=- √90=-3√10
√18×√20×√75=√ 9x2x2x10x25x3=3x2x5√30=30√30
√0.4×√3.6=√4x36/100=2x6/10=1.2
简便计算下列题目：
=10-1+100-1+1000-1+10000-1+(3/4 x4)
=11110-4+3
=11109
4.4+4.4×12+13×5.6
=4.4(1+12)+13*5.6
=4.4*13+13*5.6
=13*（4.4+5.6）
=13*10
=130
简算下列题：/是除号
原式=5.6/0.7*（16.5/1.1）=8*15=120
