五年级简便计算及答案hh

五年级简便计算及答案hh

（1）2.5*32*0.125=（2.5*4）*（8*0.125）=10*1=10（2）3.5-7+6.5=3.5+6.5-7=3（3）1.2×2.5+0.8×2.5=2.5(1.2+0.8)=25（4）8.9×1.25-0.9×1.25=1.25(8.9-0.9)=10（5）12.5×7.4×0.8=12.5×0.8×7.4=74（6）6.5×9.5+6.5×0.5=6.5×（9.5+0.5）=6.5×10=65（7）0.35×1.6+0.35×3.4=0.35*（1.6+3.4）=0.35*5=1.75（8）6.72-3.28-1.72=6.75-（3.28+1.72）=6.75-5=1.75（9）0.45+6.37+4.55=0.45+4.55+6.37=5+6.37=11.37（10）28×12.5-12.5×20=（28-20）*12.5=8*12.5=100（11）23.65-（3.07+3.65）=23.65-3.65-3.07=20-3.07=16.93（12）（4+0.4×0.25）8×7×1.25=（4+1）*7*10=5*7*10=350（13）1.65×99+1.65=1.65*（99+1）=1.65*100=165（14）27.85-（7.85+3.4）=27.85-7.85+3.4=20+3.4=23.4（15）48×1.25+50×1.25×0.2×87.8×9.9+0.78=7.8*（9.9+0.1）=7.8*10=78（16）4.8×46+4.8×54=（46+54）*4.8=100*4.8=480（17）673-327-173=673-（327+173）=673-500=173（18）4.44*2.5=1.11*（4*2.5）=1.11*10=11.1（19）3.5÷1.4=（3.5÷0.7）÷（1.4÷0.7）=5÷2=2.5（20）1+2+3+4+5.+99+100=（1+99）+（2+98）+（3+97）+.+（49+51）+50=（100÷2-1）*100+50=4900+50=4950是挺多的，我认了

7÷25+25分之7×99=25分之7×1+25分之7×99=25分之7×（1+99）=25分之7×100=7×4=28[2/3-4-1/4x(-0.4)]/(1/3)+2=(2/3-4+1/4x2/5)x3+2=2/3x3-4x3+1/10x3+2=2-12+3/10+2=-8+3/10=-7又7/10[2/3/(-4)-1/4x(-0.4)]/(1/3)²-(-2)=(-2/3x1/4+1/4x2/5)x9+2=(-1/6+1/10)x9+2=(-5/30+3/30)x9+2=2-1/15x9=2-3/5=1又2/50.8x0.25x0.4x12.5=(0.8x12.5)x(0.25x0.4)=10x0.1=1(1/2+1/3)x6=1/2x6+1/3x6=3+2=53.95x6-1.45x6-(7/9-5/6+7/18)x18=6x(3.95-1.45)-(7/9x18-5/6x18+7/18x18)=6x2.5-(7x2-5x3+7)=15-(14-15+7)=15-6=92-13/6÷26/9-3/2=2-(13/6x9/26+3/2)=2-(3/4+6/4)=8/4-9/4=-1/4854-136-36=854-(136+36)=854-172=6827/25×4/9+7/25×5/9=7/25×(4/9+5/9)=7/25×1=7/25425÷18=(414+11)÷18=414÷18+11÷18=23+11/18=23又11/1845x(7/9+4/15-3/5)=45x7/9+45x4/15-45x3/5=35+12-27=2060×(1/12+1/15+1/4)=60×1/12+60×1/15+60×1/4=5+4+15=24(5/12-3/8)×72=5/12×72-3/8×72=30-27=3[4分之3-0÷(7分之1+13分之2)]x3分之4=(4分之3-0)x3分之4=4分之3x3分之4=16/7-5/24÷7/12=6/7-5/24×12/7=12/14-5/14=7/14=1/2[3/4×(7/16-1/4)]÷9/13=3/4×（7/16-4/16）×13/9=1/4×3/16×13/3=13/642/3-7/8+1/3=(2/3+1/3)-7/8=1-7/8=1/85/6-(3/7-1/6)=(5/6+1/6)-3/7=1-3/7=4/71-1/3-2/3=1-(1/3+2/3)=1-1=01+3/5-1/10=1+6/10-1/10=1+1/2=1又1/23/8-12/13+5/8=3/8+5/8-12/13=1-12/13=1/131-(1/2-3/4)=1+3/4-2/4=1+1/4=5/41-1/2-1/4=1/2-1/4=2/4-1/4=1/42/7-8/9+5/7=(2/7+5/7)-8/9=1-8/9=1/92-1/4-3/4=2-(1/4+3/4)=2-1=11/2-(3/8-1/2)=1/2+1/2-3/4=1-3/8=5/82.64×1.7-2.64×0.7=2.64×(1.7-0.7)=2.64×1=2.6431.5×1.07-3.15×0.7=3.15×10.7-3.15×0.7=3.15×(10.7-0.7)=3.15×10=31.52.7×5.7-2.7+5.3×2.7=2.7×(5.7-1+5.3)=2.7×10=270.625÷0.125×0.8=(0.625×0.8)×8÷(0.125×8)=0.5×8÷1=418.6×6.1+3.9×18.6=18.6×(6.1+3.9)=18.6×10=18652.5x2.9+5.45=5.25x29+5.25+0.2=5.25×(29+1)+0.2=5.25×30+0.2=157.5+0.3=157.70.92x15+0.08x15=(0.92+0.08)×15=1×15=15128÷0.2×（23.5-7.5）=640x16=640x4x4=2560x4=102400.72×1.25×2.5=0.9×(0.8×1.25)×2.5=0.9×1×2.5=2.25400.6x7-2003x0.4=200.3x14-200.3x4=200.3×（14-4）=200.3×10=2003300÷125÷8=300÷(125×8)=300÷1000=0.3396-96-172-28=(396-96)-(172+28)=300-200=100125x24=125x8x3=1000x3=300026x15=(20+6)x15=20x15+6x15=300+90=39025x99x4=25x4x99=100x99=9900250x32=250x4x8=1000x8=8000(98+98+98+98)x25=4x98x25=4x25x98=100x98=98003/4÷5/8×3/10=3/4×8/5×3/10=9/5×1/5=9/251.25×(8+10)=1.25×8+1.25×10=10+12.5=22.51.24+0.78+8.76=(1.24+8.76)+0.78=10+0.78=10.781/2-(4/5-1/2)=1/2+1/2-4/5=1-4/5=1/54800÷25÷4=4800÷(25x4)=4800÷100=4800÷100=482/5-(3/8-3/5)=2/5+3/5-3/8=1-3/8=5/83/4-(3/7-1/4)=3/4+1/4-3/7=1-3/7=4/73.2x0.125x2.5=0.125x8x(0.4x2.5)=1x1=10.4×125×25×0.8=(0.4×25)×(125×0.8)=10×100=100010.1x38=38x(10+0.1)=38x10+38x0.1=380+3.8=383.81.25×(8+10)=1.25×8+1.25×10=10+12.5=22.59123-(123+8.8)=9123-123-8.8=9000-8.8=8991.21.24×8.3+8.3×1.76=8.3×(1.24+1.76)=8.3×3=24.99999×1001=9999×(1000+1)=9999×1000+9999×1=1000899914.8×6.3-6.3×6.5+8.3×3.7=(14.8-6.5)×6.3+8.3×3.7=8.3×6.3+8.3×3.7=8.3×(6.3+3.7)=8.3×10=831.24+0.78+8.76=(1.24+8.76)+0.78=10+0.78=10.78933-157-43=933-(157+43)=933-200=7334821-998=4821-1000+2=382332×125×25=4×8×125×25=(4×25)×(8×125)=100×1000=1000001.8+18÷1.5-0.5×0.3=1.8+12-0.15=13.8-0.15=13.656.5×8+3.5×8-47=52+28-47=80-473.7x2.56-2.3=9.472-2.3=7.1721.24+0.78+8.76=(1.24+8.76)+0.78=10+0.78=10.781/2-(4/5-1/2)=1/2+1/2-4/5=1-4/5=1/512-1÷4-1/4x7=12-1/4-1/4x7=12-1/4x(1+7)=12-1/4x8=12-2=104800÷25÷4=4800÷(25x4)=4800÷100=4800÷100=482/5-(3/8-3/5)=2/5+3/5-3/8=1-3/8=5/83/4-(3/7-1/4)=3/4+1/4-3/7=1-3/7=4/73.2x0.125x2.5=0.125x8x(0.4x2.5)=1x1=10.4×125×25×0.8=(0.4×25)×(125×0.8)=10×100=10001.25×(8+10)=1.25×8+1.25×10=10+12.5=22.59123-(123+8.8)=9123-123-8.8=9000-8.8=8991.21.24×8.3+8.3×1.76=8.3×(1.24+1.76)=8.3×3=24.99999×1001=9999×(1000+1)=9999×1000+9999×1=1000899914.8×6.3-6.3×6.5+8.3×3.7=(14.8-6.5)×6.3+8.3×3.7=8.3×6.3+8.3×3.7=8.3×(6.3+3.7)=8.3×10=831.24+0.78+8.76=(1.24+8.76)+0.78=10+0.78=10.78933-157-43=933-(157+43)=933-200=7334821-998=4821-1000+2=382332×125×25=4×8×125×25=(4×25)×(8×125)=100×1000=1000001.8+18÷1.5-0.5×0.3=1.8+12-0.15=13.8-0.15=13.656.5×8+3.5×8-47=52+28-47=80-47=330.35x10.8÷15=0.35x10.8/15=0.07x3.6=0.25212-1÷4-1/4x7=12-1/4-7/4=12-(1/4+7/4)=12-8/4=12-2=10101x99=99x(100+1)=99x100+99x1=9900+99=999913分之1×7分之5+13分之5×7分之6=13分之5×7分之1+13分之5×7分之6=13分之5×（7分之1+7分之6）=13分之5×1=13分之53.8x9.9+0.38=3.8x9.9+3.8x0.1=3.8x(9.9+0.1)=3.8x10=38

7÷25+25分之7×99=25分之7×1+25分之7×99=25分之7×（1+99）=25分之7×100=7×4=28