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1、口算（一）2340= 543= 1830= 6030= 7050= 25050= 1460= 8040= 1850= 口算（二）1630= 1.25+2.3= 35.7-2.4= 12.3+4.06= 0.75+0.4= 1.34+0.8= 9.5-2.7= 1.8+8.18= 7.82-7.2= 口算（三）8.7+0.03= 2.7+3.9= 9.3-8.8= 1.9+25.79= 4.5-3.26= 5.1-1.9=2.2+5.7= 4.8-2.5= 18.3-3.7= 口算（四） 2.9+15.9= 6.3+3.6= 6.7-4.5= 6.8-0.7= 27.3+2.15= 23.5+1
2、.68= 53.16+3.54= 6.6-3.7= 7.2-2.7=口算（五）12.3+3.7= 5.3+4.47= 2.8+1.9= 3.2+12.76= 3.25-0.12= 4.5-2.1= 5.8+6.9= 1.5+4.85= 16.8+5.4= 口算（六）3.6-1.3= 24.6+2.4= 8.1+1.2= 2.45+5.5= 0.5+2.6= 93.1-20.9= 53.4-2.4= 5-0.08= 96.3-56.2=口算（七）136.5-105= 73.4+52.1= 79.2+56.8= 7.21+6.9= 1.64+2.35= 6.72-3.28=35.7-2.4= 4.
3、5-3.26= 5.1-1.9= 口算（八）2.2+5.7= 64080= 155=233= 1225= 48080=165= 273= 9015=口算（九）484= 64016= 393=2420= 323= 4816=128= 273= 9015=口算（十）5614= 83-45= 56080=9624= 4030= 37+26=76 - 39= 605+59= 3023=口算（十一）128= 27+32= 48+27=450020= 73+15= 120060=200360= 6800400= 280+270=口算（十二）42500= 600040= 51280= 31070= 4001
4、4= 470+280=100025= 160060= 290300=口算（十三）8100300= 7600200= 930-660=7600200= 680+270= 98014=420030= 61300= 130050=口算（十四）20048= 530+280= 9200400= 84021= 180500= 8000500= 190020= 200160= 8700300=口算（十五）300330= 31400= 700014= 60012= 960080= 140300= 880040= 750290= 5490=口算（十六）76020= 7500500= 370200= 65013=
5、 86004200= 2404= 64080= 1510= 16030=口算（十七）2506= 7200+900= 410-201= 1258= 4820= 6600600=390+140= 1180= 2450= 口算（十八）3600400= 400050= 4.8-2.5=18.3-3.7= 2.9+15.9= 6.3+3.6=6.7-4.5= 6.8-0.7= 0.2-0.09=口算（十九）2+9.1= 0.89-0.25= 1-0.55=20.22+0.78= 2-0.75= 5.78-0.24=0.42+10.68= 8.34-6.22= 6.37+4.55=口算（二十）3205=
6、1208= 9470=3105= 6150= 3905=2570= 9403= 2702=口算（二十一）7008= 4280= 6660=2880= 6230= 8800=7210= 8606= 9306=口算（二十二）4809= 2806= 2403=7130= 4502= 3903=2705= 5690= 7209=口算（二十三）8920= 4890= 3407=4710= 8730= 9002=1709= 9970= 4590=口算（二十四）3860= 7630= 3960=6808= 3402= 5490=5510= 6470= 5603=口算（二十五）27.3+2.15= 23.5+
7、1.68= 53.16+3.54= 6.6-3.7= 7.2-2.7= 12.3+3.7=5.3+4.47= 2.8+1.9= 3.2+12.76= 口算（二十六）3.25-0.12= 53070= 42090= 960030= 7700= 203+98= 1800300= 240+570= 4800400= 口算（二十七）370+580= 580-490= 910370= 2508= 270190= 3602= 7525= 33011= 6800= 口算（二十八）54009= 42060= 9800= 3330= 3007= 9500= 39013= 6300700= 370560= 口算（
8、二十九）5600700= 480012= 35007= 520+490 45090 80330 70700 700070 400080 口算（三十）2400200 42090 170320 100051 520260 910190 35200 22200 8800400 口算（三十一）9300300 6300 1800200 930030 28040 30419939026 125050 2140 口算（三十二） 6600220 760198 660220 500050 10091 753299 700070 20040 18030= 口算（三十三）24040= 352= 1407= 136=
9、 2803= 5011= 2506= 7200+900= 410-201= 口算（三十四）1258= 4820= 6600600= 390+140= 1180= 2450= 3600400= 400050= 53070= 口算（三十五）42090= 960030= 7700= 203+98= 1800300= 240+570= 4800400= 203+98= 1800300= 口算（三十六）240+570= 4800400= 370+580= 580490= 910370= 258= 270190= 362= 7525= 口算（三十七）33011= 6800= 54009= 42060= 9
10、800= 3330= 3007= 9500= 39013= 口算（三十八）6300700= 5600700= 480012= 35007= 370560= 520490=45090 80330 70700 口算（三十九）700070 400080 2400200= 42090 170320 520260= 910190= 35200 22200 口算（四十）8800400= 9300300= 6300 1800200 28040 30419939026 125050 2140 口算（四十一）6600220= 760198= 660220 500050 10091 753299 1740 100
11、63 7515 口算（四十二）4.4+15.99= 88-69.21= 63.1-11=0.48+0.52= 1-0.98= 3.7+4.8= 8.36+0.64= 3.6+0.87= 8.16+3.7=口算（四十三）0.33+9.8= 12.3+4.06= 0.75+0.4=1.34+0.8= 9.5-2.7= 1.8+8.18=7.82-7.2= 8.7+0.03= 2.7+3.9=口算（四十四）9.3-8.8= 1.9+25.79= 7.85+3.4=3.07+3.65= 1.83+2.7= 13.8+9.9=0.29+2.1= 8.3-2.63= 1.7+0.43= 口算（四十五）5-
12、0.44= 12.6+3.42= 19.8-5.6=14-0.14= 4.64+15.36= 0.99+1.8= 2.56-0.37= 3.9+2.03= 2.14-0.9=口算（四十六）7.55-4.1= 0.87+5.68= 13.3-5.28= 7.87+5.66= 62.3-1.25= 5.7-0.93=10.5-3.25= 6.4+1.89= 4.1+28.9= 口算（四十七）25.13-1.8= 5.87+35.26= 3.08+5.83=5.62-4.2= 16.52-1.08= 35.85+8.04=30.07+39.65= 11.83+62.7= 3.8+9.9=口算（四十八
13、）54.29+27.1= 98.3-2.3= 10.7+0.93=5.64-0.44= 1.6+68.42= 85.8-56.6=20.2-7.09= 24+9.18= 10.89-10.25=口算（四十九）1.1-0.55= 2.22+0.8= 2.2-0.75=54.78-10.24= 50.42+20.98= 2.34-1.2=66.37+8.5= 8.02+15.28= 108.5-35.05=口算（五十）0.32+1.57= 9.25+2.25= 9.23+4.52=24.8+1.46= 5.58+1.89= 0.78+2.2=0.8-0.45= 6.45-3.29= 92.7-0.
14、05=口算（五十）87.68-20.7= 75.8-17.5= 42.5-23.65=56.2+9.38= 67.3+23.92= 4.72+8.49=5.63+1.27= 9.06-1.59= 7.95-4.9=口算（五十一）8.02+5.08= 18.5-5.07= 4.32+18.7=5.65+8.95= 7.3+49.52= 54.8+9.4=6.8+89.8= 0.78+2.2= 0.6-0.59=口算（五十二）66.5-3.2= 55.63-5.6= 11.3+80=15.6-4.4= 8.4+35.76= 8.8-2.69=62.9-2.17= 6.08+12.3= 3.9+1.
15、32=口算（五十三）15.78+23.9= 4.5-1.5= 3.7+7.25=64.79-8.67= 5.3+19.45= 4.86-0.42=3.06+8.45= 4.64+2.36= 7.8+45.22=口算（五十四）1.8+5.75= 0.63+4.5= 29.9+5.6= 4.78+3.94= 98.8+0.08= 47.3+5.04=33.1-7.65= 6.07-5.63= 56.3-28.7=口算（五十五）1.62-1.58= 2.15+10.86= 81.1-14.9=4.2+3.76= 12.7-0.55= 7.68-2.74=5.58-1.75= 12.45-0.65=
16、6.32+8.3=口算（五十六）27.3+73.2= 4.22+8.46= 5.63+1.25=9.36-1.59= 7.65-4.19= 3.9+7.5=16.9-1.79= 5.63+9.5= 4.6-0.52=口算（五十七）3.56+5.75= 2.64+2.36= 76.8+5.2=1.5+5.5= 0.68+4.85= 39.7+5.06= 2.42+0.59= 57.5+1.36= 6.09+8.04=口算（五十八）4.98+1.89= 6.4+53.6= 32.01+5.05=24.4-15.5= 3.6+20.02= 41.2-2.66=4.4+7.68= 92.7-0.05=
17、 87.68-20.7=口算（五十九）75.8-17.5= 42.5-23.65= 56.2+9.38=67.3+23.92= 4.72+8.49= 5.63+1.27=9.06-1.59= 7.95-4.9= 2.42+0.59=口算（六十）57.5+1.36= 6.09+8.04= 4.98+1.89=6.4+53.6= 32.01+5.05= 24.4-15.5=3.6+20.02= 41.2-2.66= 4.4+7.68= 口算（六十一）55.63-5.6= 11.3+80= 15.6-4.4=8.4+35.76= 8.8-2.69= 62.9-2.17=6.08+12.3= 3.9+
18、1.32= 15.78+23.9=口算（六十二）4.5-1.5= 4.78+3.94= 98.8+0.08=47.3+5.04= 33.1-7.65= 6.07-5.63=56.3-28.7= 1.62-1.58= 2.15+10.86=口算（六十三）81.1-14.9= 4.2+3.76= 2.32+0.59=6.5+18.9= 6.9+8.4= 4.9+1.87=6.5+13.56= 33.51+5.5= 48.43-15.65=口算（六十四）3.36+0.92= 41.92-2.6= 4.5+17.58= 5.63-5.21= 1.3+8.56= 14.6-0.34=8.24+3.76=
19、 8.88-2.69= 42.5-22.17=口算（六十五）6.2+12.63= 3.8+1.37= 15.28+28.99=4.65-1.15= 4.08+3.96= 28.8+3.58=45.03+5.4= 34.71-5.65= 68.07-5.63=口算（六十六）6.3-2.07= 51.62-16.58= 22.15+16.96=51.16-14.6= 4.6+3.76= 3.94+35.6=41.43+22.68= 7.08+28.95= 28.3+1.95=口算（六十七）19.29-9.3= 6.8-5.05= 25.63-7.52=25.9+31.1= 99.1+1.9= 35
20、.5+25.4= 32.5+6.84= 35.43-15.3= 101.7-81.65=口算（六十八）17.26+56.17= 53.69+39.05= 8.99+58.06=26.5-15.7= 27.37+6.58= 50.43-34.4=13.29+25.58= 11.3+31.25= 9.37-6.8=口算（六十九）44.9-31.9= 20.1-19.9= 71.4+22.57=7.06+2.87= 0.8+82.2= 2.55+9.45=51.9-21.8= 29.4-8.83= 5.12+7.84=口算（七十）7.56+4.36= 81.9-56.45= 35-15.6=18.2
21、6+3.8= 71.05+2.25= 40-27.35=16.09+7.01= 3.46+5.05= 11.16-2.36= 口算（七十一）145.8-15.3= 128.9-17.7= 35.5+41.9=13.56+24.44= 33.8-25.6= 158.3-38.2=4.97+7.29= 18.9+27.1= 0.9+121.1=口算（七十一）96.7+16.3= 23.5-4.05= 5.4+73.65=1.8+3.09= 75.9-38.7= 51.2-11.2=22.13+4.07= 76-47.88= 39.1+2.09=口算（七十二）48.6-47.9= 1.6+20.47
22、= 211.9-11.8=31.7+57.7= 9.81-0.09= 28.23-2.02=198.3-25.1= 132.8-59.8= 91.9-21.1=口算（七十三）9.28+1.69= 59.9+41.1= 97.8+14.55=29.8-3.5= 57.62+5.5= 0.95+9.65=36.9+6.1= 30.5-15.6= 9.05-3.4=口算（七十四）26.7+13.3= 41.9-5.8= 16.89-2.46=85.6-45.1= 7.94+18.5= 4.28-1.93=9.53+3.3= 36.1-31.4= 5.02+3.73=口算（七十五）44.6-15.15
23、= 21.2+58.36= 9.07+48.1=17.6-6.29= 13.47+85.4= 3.29+12.5=62.3-33.75= 4.83+10.51= 13.98+16.3=口算（七十六）6.03-3.7= 9.84-2.77= 8.15+32.5=35.82-5.67= 5.69+17.2= 4.25-2.11=80.09-14.49= 11.89+7.74= 8.41-1.16=口算（七十七）4.05+44.83= 57.63-40.43= 25.54-17.32=4.46+36.8= 25.64-5.01= 34.9+35.5=74.32-8.75= 5.93+6.13= 37
24、.5-4.06=口算（七十八）10.73-2.19= 14.01+3.99= 8.63-7.73=27.9+25.55= 11.43+8.34= 26.8-17.06=67.1-49.05= 13.74+9.53= 7.25+5.23=口算（七十九）3.84-3.48= 9.15-7.4= 4.42+16.34=33.46-16.06= 8.74+13.82= 3.36-3.29=46.1+6.95= 17.01-3.72= 29.22+6.33=口算（八十）83.2-7.9= 47.2-19.6= 39.8+6.79=9.11+15.9= 85.2-59.3= 3.17+5.6=6.9-1.
25、15= 8.75+6.7= 4.78+19.4=口算（八十一）43.2-35.5= 4.47+9.64= 69.2-30.4=16.08+7.78= 12.25-7.62= 36.28+24.9=51-35.6= 6.11-2.2= 4.86+17.4=口算（八十二）65.16-30.01= 34.9+9.09= 3.92-2.1=16.3+28.1= 3.57+11.5= 34.1-12.05=10.37+8.6= 39.5-7.2= 28.04-5.8=口算（八十三）2.37+6.94= 61-10.7= 8.46+5.38=5.36+4.1= 14.8+16.2= 15.16-2.4=1
26、6.18+45.96= 0.51+2.86= 11.52+22.74=口算（八十四）31.26-2.9= 32.6+5.97= 31.28+13.82=22.81-10.92= 50.36+15.63= 2.6+16.44=21.55+20.6= 5.66+1.44= 1.69+5.88=口算（八十五）51.26+5.8= 27.3+4.4= 53.6-16.83=22.54+6.66= 13.2-1.66= 24.5-1.9=51.62-2.8= 23.4-12.48= 4.56+12.56=口算（八十六）46.25-5.6= 23.56+12.45= 22.11-3.87=63.25-7.78= 24.26+15.83= 18.37+15.7=1.83+9.26= 13.02+5.99= 31.24-16.5=口算（八十七）10.33-7.7= 16.5+43.25= 60.03+19.57=16.59-1.66= 43.33-5.6= 28.16-6.9=38.19-2.6= 13.8+37.85= 17.51-3.6=口算（八十八）55.16-22.37= 2.3