口算题2.docx

1、口算题27+14= 18-9= 8+16=25-5= 9+18= 56-45=10+20= 45-23= 11+22= 78-23= 12+24= 10-3=15-4= 20-5= 25-6=30-7= 35-8= 40-9=45-10= 50-11= 80-17=55-12= 60-13= 75-16=65-14= 70-15= 90-19=85-18= 95-20= 100-21= 105-22= 110-23= 115-24= 120-25= 125-26= 130-27=13+26= 14+28= 15+30= 16+32= 17+34= 18+36= 19+38= 20+40= 21

2、+42= 22+44= 23+46= 24+48= 25+50= 26+52= 27+54= 28+56= 29+58= 30+60=31+62= 32+64= 33+66=5 1 = 10 2 = 15 3 = 20 4 = 25 5 = 30 6 =35 7 =5 40 8 = 45 9 =50 10 = 55 11 = 60 12 = 65 13 = 70 14 = 75 15 =80 16 85 17 90 18 95 19 100 20 口算题21) 45+156= 2) 25058=3) 6524 4) 303+8 5) 4004+205= 6）10+123+20= 7）(8020

3、+80)4= 8）70+(100-105)= 9）36040= 10）4020= 11）80-25= 12）70+45= 13）902= 14）166= 15）3006= 16）5409= 17）3020= 18）4004= 19）350-80= 20）160+70= 21）18-648= 22）426+20= 23）40-57= 24）80+603= 25）41+182= 26）75-115= 27）42+7-29= 28）560080= 29）2516= 30）12025= 31）3611= 32）102525= 33）336+70= 34）2594= 35）200-333= 36）302

4、0-1010= 37）1250= 38）258= 39）2311= 40）12525= 41）4200-2200= 42）220+80= 43）2085= 44）600-3200= 45）20+202= 46）35-255= 47）36+8-40= 48）280040= 49）9814 = 50）9624 = 51）5614 = 52）6513 = 53）7515 = 54）12024 = 55）20025 = 56）80016 = 57）84021 = 58）56014 = 59）39013 = 60）60015 = 61）7224 = 62）8517 = 63）9015 = 64）9616

5、 = 65）7826 = 66）5117 = 67）8040 = 68）10020 = 69）1004 = 70）24040 = 71）9204 = 72）30060= 73）642 = 74）644 = 75）505 = 76）608 = 77）964 = 78）906 = 79）400+80 = 80）400-80 = 81）4080 = 82）40080 = 83）4816 = 84）9624 = 85）1605= 86）4250= 87）0518= 88）1076= 89）3610= 90）156= 91）243= 92）518= 93）264= 94）715= 95）3230= 96

6、）4015= 97）6012= 98）2330= 99）3050= 100）5700= 1740 10063 3.21.68 2.80.4 147.4 1.920.040.32500 0.654.35 105.4 420 3.5200 1.50.060.7515 0.40.8 40.25 0.361.54 1.0199 420352512 1350.5 3/4 + 1/4 = 2 + 4/9 = 3 - 2/3 = 3/4 - 1/2= 1/6 + 1/2 -1/6 = 7.5-(2.5+3.8)= 7/8 + 3/8 = 3/10 +1/5= 4/5 - 7/10 2 - 1/6 -1/3

7、0.5117 32.819 5.21.3 1.60.4 4.90.7 15 612 0.870.491、(1+1/2)(1+1/3)(1+1/4).(1+1/100) 2、(1-1/2)(1-1/3)(1-1/4).(1-1/100) 3）8+2-8+2 4）254/254 5）7.26-(5.26-1.5) 6）286+198 7）314-202 8）526+301 9）223-99 10）6.25+3.85-2.125+3.875 11）9-245621 12）0.5/11.5-42.75 13）1/23/5 14）3.375+5.75+2.25+6.625 15）1001903618 1

8、6） 3.85.25+14.5 17）2.14.3+5.72.1 18）301/3 19）10245-328 20）2/312 21）2.83.1+17.6/8 22）3/55/6 23）(50-12.5)/2.5 24) 2/51/3 25) 611047+639 26)1/2-1/6 =27) 3.52.7-52.2/18 28)1/71/5= 29) 3.3750.97+0.976.625 30) 254/5=31) 6.54+2.4+3.46+0.6 32) 5/6-1/2 =33) 95.61.8+95.68.2 34) 1/21/5 =35) 600-420/12 36) 344/

9、3.6-5.40.25 =37) 16/2+30/2+90/6 38) 3001-1998=39) 5000-10534 40) 0.15/0.25+0.751.2 =41） (1/2+1/3+1/4)0.24 42）(25+4)4= 43） 300-4263/21 44） 0.81/0.25+5.96 =45）4031327 46）1.54.20.750.25= 47）3.274 +3.275.7 48）（1.2+ 1.8）4.5102576832 =49）0.25800.450.9 50）102576832 =51）0.252.694 52）2348+27516 =53）2/915/8-1

10、/129/5 54）2.4+2.4(5.375-3.375) =55）645-4512= 56）0.15+1.2/0.24-0.45 =57）3.75-(2.35+0.25/1.25) = 58）761/4+2325/100+0.25 =59）10-2.87-7.13 60）0.96+9.69.9 =61）7.5-5.71/3 62）12.37-3.25-6.75 =63）166.8+2.216+16 64）40119+284 =65）58.7-16.65/3.7 66）0.44.72.5+(2.3+5.3) =67）9.31-1.125-7.875 68）640+12845 =69）8.21

11、.6-0.336/4.2 70）400(0.62+0.08) =2/12= 3/13= 3/23= 3/16= 4/38= 5/320= 7/314= 8/740= 4/316= 9/527= 2/130= 12/724= 30/130= 51/9102= 19/976= 4/98= 5/890= 99/9899=3/146= 7/128= 10/190=5/3105= 19/738= 5/125=8/1916= 61/60122= 7/228=6/148= 9/718= 25/7100=9/581= 8/916= 123+25= 123-35= 567= 1355=248+89= 146-2

12、3= 1555= 456-12= 456+45= 546-457= 4510= 564-12= 879+54= 896-546= 5612= 45-5= 457+456= 脱式计算 30.814(9.851.07) 60(9.528.9)0.18 2.8810.430.243.5 20(2.441.8)0.40.15 28-(3.4+1.252.4) 2.557.1+2.457.1 7779+11113 0.815.5-(3.21+5.79) （31.8+3.24）5 31.54(6+3) 0.64257.8+2.2 22.5+2.52 19464.81.80.9 36.724.259.9 5

13、1807056 242.42.50.8 (4121+2389)7 67115-974 46912+1492 405(3213-3189) 3.416（0.01635） 0.8(106.76)1.2 19.46.12.3 5.670.2-0.62 18.10.92+3.93 0.043+0.24+0.875 0.40.70.25 0.75102 100-56.23 0.78+5.436+1 4.070.86+9.12.5 30.814(9.851.07) 60(9.528.9)0.18 2.8810.430.243.5 20(2.441.8)0.40.15 28-(3.4+1.252.4) 2.

14、557.1+2.457.1 7779+11113 0.815.5-(3.21+5.79) （31.8+3.24）5 31.54(6+3) 0.64257.8+2.2 22.5+2.52 19464.81.80.9 36.724.259.9 51807056 242.42.50.8 (4121+2389)7 67115-974 46912+1492 405(3213-3189) 3.416（0.01635） 0.8(106.76)1.2 19.46.12.3 5.670.2-0.62 18.10.92+3.93 0.0430.24+0.875 0.40.70.25 0.75102 100-56.

15、23 0.78+5.436+1 4.070.86+9.12.5 简算 0.32.50.4 500.130.2 0.86300.125 0.78101 1.5102 9.825 1.22.5+0.82.5 1.250.70.8 0.03852.1 3.8+4.5+6.2 93/0.31/3 3.250.84-0.16880.254 2.83.6+1.42.8 6310.1（3.2+0.128）/0.8 9.831.5+6.171.5 10.1873124+1884 0.1355000.2 6.3+0.84+3.7+8.16 18.75-0.43-4.57 0.250.034 13.70.258

16、2.651.7+1.351.7 32.8+5.6+7.2 （2.5+0.25）0.4 8（2.50.25） 8.40.2+1.60.2 1.250.80.5（1.5+0.25）0.4 1.20.4+1.30.4方程9+6x=14 x+9x=4+7 2x+9=17 8-4x=6 6x-7=12 7x-9=8 x-56=1 8-7x=1x-30=12 6x-21=21 6x-3=6 9x=18 4x-18=13 5x+9=11 6-2x=11 x+4+8=237x-12=8 X-5.7=2.15 5X-2X=18 18x14x=120.7=5x13 333 5x80 1.8 +6x54 23x=1

17、4x146.7x 60.36.7 9 4x 40 2x+8=16 2214x=123.52= 4.2x 261.5= 2x 0.516160.2=4x 23x=14x149.25X=0.403 16.9X=0.3 X0.5=2.6 23x=14x1435x80 1.8-6x54 6.7x60.36.7 23x514=149 4x40 0.2x0.40.53.7 9.4x0.4x16.2 124x20 1/3x5/6x1.4 12x34x=1 18x14x=12 23 x514=14 1234x=562214x=12 23x-14x=14 x14x=6523x=14x14 30 x+12x14x=1 x-0.7x=3.6