作业帮5.45 0.68X4.7简便计算
来源：学生作业帮助网 编辑：作业帮 时间：2024/05/13 16:54:39
1/1x4+1/4x7+1/7x10+1/10x13+1/13X16=(1/3)×[(1-1/4)+(1/4-1/7)+(1/7-1/10)+(1/10-1/13)+(1/13-1/16)]=(1/3
1/(1x4)+1/(4x7)+1/(7x10)+1/(10x13)=1/3x(1-1/4)+1/3x(1/4-1/7)+1/3x(1/7-1/10)+1/3x(1/10-1/13)=1/3x(1-1
11x22+0.22x3300+330x4.4=11×11×2＋11×0.02×11×300＋11×30×11×0.4=11的平方×【2＋6＋12】=121×20=2410
9.6x(1.4+4.5-1.8+4.9+1)=96
1．计算1.135+3.346+5.557+7.768+9.979=_____.2.计算1.996+19.97+199.8=_____.3.计算9.8+99.8+999.8+9999.8+99999.
1/17x4/9+5/17x1/9=1/17x4/9+1/17x5/9=1/17x(4/9+5/9)=1/17x1=1/17
=26x15.7+15.7x48=(26+48)x15.7=74x15.7=1161.8
1.125*3+125*5+25*3+252.9999*3+101*11*(101-92)3.(23/4-3/4)*(3*6+2)4.3/7×49/9-4/35.8/9×15/36+1/276.12×
33.2*4+33.4*8=33.2*4+66.8*4=（33.2+66.8）*4=100*4=400
(70+1/68)*1/69=(69+1+1/68)*1/69=(69+69/68)*1/69=69*1/69+69/68*1/69=1+1/68=69/68
（1）8.29+3.7+0.71+6.3（2）2.5x2.5-0.25（3）5.4x10.1（4）2.8x0.9（5）3.2x1.25（6）53.64-（4.23-2.36）（7）10.2x4.5（8
9.52x4-3.52÷0.25=9.52x4-3.52×4=4×（9.52-3.52）=4×6=24
(324又7分之1-810又6分之1+486.5)x4.2=(324+486-810+1/7-1/6+1/2)x4.2=（1/7-1/6+1/2）x4.2=1/7x4.2-1/6x4.2+1/2x4.
25.25x0.64x4/0.64=25.25x4=25x4+0.25x4=100+1=101
分数和分数结合得到11,小数和小数结合得到9,11-9=2
0.125x4.8x0.25=0.125×8×（0.25×2）×0.3=1×0.5×0.3=0.15
24x3/5+3/5=(24+1)x3/5=25x3/5=152/3x4/7x3/10=(2/3x3/10)x4/7=1/5x4/7=4/35
36.3X4.5+6.37X45=36.3X4.5+4.5X63.7=4.5X(36.3+63.7)=4.5X100=450
2×22=442×（20+2）=2×20+2×2=44
29X4分之68-13X17.25+84除以96分之4=29×17-13×(17+0.25)+84÷24=29×17-13×17-13×0.25+7/2=17×(29-13)+3.5-3.25=17×