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1、2.1+0.2=2.1+0.2=2.59+9.10=2.59+9.10=96.3-56.296.3-56.2= =3.96+6.04=3.96+6.04=36.08+9.92=36.08+9.92=7 7. .3 3 2 2. .6 =6 =63.22-22.77=63.22-22.77=2.4+1.2=2.4+1.2=2.65+9.32=2.65+9.32=7 7. .23 + 323 + 3. .6 =6 =10107.64=7.64=42.5-17.8=42.5-17.8=0.33+9.88=0.33+9.88=20205.6745.6741.26+5.21=1.26+5.21=7.68
2、-6.50=7.68-6.50=6 6. .2525 2 2. .25 =25 =2.6+0.4=2.6+0.4=8.658.656.31=6.31=3.79-3.47=3.79-3.47=8.28+4.75=8.28+4.75=9.69.6 3.5 = 3.5 =5.82-4.73=5.82-4.73=5.63-5.21=5.63-5.21=56.4+23.1=56.4+23.1=33.84+16.5=33.84+16.5=5 5. .8 8 2 2. .4=4=75.2-28.375.2-28.3= =7.65+2.13=7.65+2.13=1.2+8.8=1.2+8.8=2.3 +4.2
3、1 =2.3 +4.21 =54.49-22.5=54.49-22.5=45.96-24.4145.96-24.41= =0.72+0.91=0.72+0.91=16.65+18.87=16.65+18.87=3.51+0.2=3.51+0.2=3.51+9.00=3.51+9.00=5 5. .6363 1 1. .63=63=17.2-0.36=17.2-0.36=21.65+4.05=21.65+4.05=17.40-4.04=17.40-4.04=41.98+18.24=41.98+18.24=6.35-5.23=6.35-5.23=10107.64=7.64=8 8. .8 + 18
4、 + 1. .2 =2 =7.2+6.9=7.2+6.9=21.4321.437.56=7.56=9.3-8.8=9.3-8.8=136.5-105.7136.5-105.7= =1.99+25.7=1.99+25.7=93.88-69.21=93.88-69.21=6.14-2.01=6.14-2.01=1.23+6.52=1.23+6.52=3 3. .2525 1 1. .83 =83 =5.86-1.95=5.86-1.95=13.613.68.46=8.46=6 6. .19 + 219 + 2. .5 =5 =9 9. .19+119+1. .86 =86 =9.28+7.32=9
5、.28+7.32=73.55-14.6873.55-14.68= =8 8. .0404 6 6. .87 =87 =5.58+0.13=5.58+0.13=5.2-0.9=5.2-0.9=7.5-0.5=7.5-0.5=0.96+4.680.96+4.682 2. .54 +154 +1. .84=84=9.25+2.25=9.25+2.25=3.85+61.18=3.85+61.18=4.22+8.46=4.22+8.46=0.83+0.68=0.83+0.68=7.65-4.19=7.65-4.19=8.88-2.69=8.88-2.69=6.97-5.97=6.97-5.97=4.5-
6、0.01=4.5-0.01=7 7. .17 +117 +1. .5 =5 =2.98+3.26=2.98+3.26=35.4-24.58=35.4-24.58=6 6. .1 1 4 4. .6 =6 =6 6. .42 + 842 + 8. .18 =18 =45.52-22.18=45.52-22.18=5.2-0.08=5.2-0.08=7.47.4 6.1 = 6.1 =0.45+5.47=0.45+5.47=16.25-7.94=16.25-7.94=8 8. .22 + 222 + 2. .11 =11 =13+7.113+7.1= =9 9. .3434 2 2. .34=34
7、=0.74-6.4=0.74-6.4=1.3+4.31.3+4.3= =4.5-0.9=4.5-0.9=12.3+96.5=12.3+96.5=0.55-0.33=0.55-0.33=24.8-18.2=24.8-18.2=1.23+5.69=1.23+5.69=1-0.89=1-0.89=5 5. .81+ 781+ 7. .19 =19 =1.509+0.93=1.509+0.93=95.44+53.12=95.44+53.12=3.83+9.45=3.83+9.45=42.55-0.69=42.55-0.69=1.27+0.31=1.27+0.31= =5 5. .63+263+2. .
8、21=21=7 7. .3 3 6 6. .58 =58 =7 7. .1 + 11 + 1. .7 =7 =7.61 + 6.89 =7.61 + 6.89 =4.51+2.49=4.51+2.49=7 7. .35 +335 +3. .35 =35 =2.4+2.66=2.4+2.66=0.32+1.57=0.32+1.57=8.49+6.71=8.49+6.71=0.8-0.45=0.8-0.45=4.56+14.62=4.56+14.62=1.69+2.21=1.69+2.21=3.7-0.9=3.7-0.9=3.17+2.45=3.17+2.45=8 8. .5353 4 4. .1
9、5=15=35.65-19.9=35.65-19.9=56.78-21.5=56.78-21.5=8.78-0.52=8.78-0.52=10.23-0.88=10.23-0.88=0.41+0.950.41+0.954 4. .6767 1 1. .67 =67 =3 3. .1212 1 1. .2 =2 =1.63 + 3.85 =1.63 + 3.85 =3 3. .65+ 665+ 6. .05 =05 =13.613.68.46=8.46=9 9. .1111 6 6. .78 =78 =8.658.656.31=6.31=13.613.68.46=8.46=0.990.991.1
10、=1.1=8.89-0.20=8.89-0.20=96.12+52.396.12+52.3= =5 5. .82 + 382 + 3. .28 =28 =8.25-4.64=8.25-4.64=3 3. .2727 1 1. .6 =6 =9 9. .5 5 3 3. .7 =7 =1 1. .72+972+9. .28 =28 =7 7. .6 6 1 1. .2 =2 =5.32-0.93=5.32-0.93=5.15-4.79=5.15-4.79=9 9. .61+661+6. .89 =89 =42.5-19.542.5-19.5= =1.5+0.51.5+0.58.60-6.39=8
11、.60-6.39=9.5+12.5=9.5+12.5=3.7 + 6.3 =3.7 + 6.3 =23.5+21.35=23.5+21.35=6.786.78 1.22 = 1.22 =1.59+3.95=1.59+3.95=8-7.56=8-7.56=6.54+0.58=6.54+0.58=4.54+2.55=4.54+2.55=4-0.04=4-0.04=3.5 + 2.6=3.5 + 2.6=16.76+6.61=16.76+6.61=6.746.74 6.4 =6.4 =5 5. .4 4 3 3. .6 =6 =5 5. .79 + 6 =79 + 6 =7.947.94 3.35
12、= 3.35 =3.6+1.6=3.6+1.6=8.42-7.04=8.42-7.04=4.54.5 2.1 = 2.1 =0.78+2.2=0.78+2.2=8+2.5=8+2.5=3.90-2.76=3.90-2.76=4.5-0.01=4.5-0.01=46.32+65.18=46.32+65.18=4.62+8.95=4.62+8.95=7 7. .4 4 1 1. .1 =1 =0.96-0.23=0.96-0.23=4 4. .53 + 453 + 4. .7 =7 =3 3. .7 + 27 + 2. .8 =8 =0.37+3.23=0.37+3.23=0.990.991.1=
13、1.1=2.16-0.23=2.16-0.23=8.06+1.37=8.06+1.37=4 4. .43 + 543 + 5. .5 =5 =5.8+25.8+25-0.2=5-0.2=4.63+8.92=4.63+8.92=4.2+15.6=4.2+15.6=7 7. .8 8 6 6. .65 =65 =4.4+15.99=4.4+15.99=3.25+0.75=3.25+0.75=5.03-2.90=5.03-2.90=9 9. .6+ 66+ 6. .4 =4 =63.43-18.18=63.43-18.18=9.32+3.4=9.32+3.4=7 7. .24 +224 +2. .84=84=9.08-1.28=9.08-1.28=0.3+0.7=0.3+0.7=1.12-1.02=1.12-1.02=2.91+5.54=2.91+5.54=4 4. .72 +172 +1. .5 =5 =11.6-9.23=11.6-9.23=16.36+56.16=16.36+56.16=4.5-0.79=4.5-0.79=7 7. .8 8 6 6. .15 =15 =5.63+1.25=5.63+1.25=