2019年小学一年级口算出题之二(20以内的加减混合不进位).doc

2019年小学一年级口算出题之二(20以内的加减混合不进位)8 - 3 =8 + 4 =11 + 7 =11 - 1 =6 - 4 =6 - 3 =6 + 13 =12 + 4 =7 + 11 =13 - 1 =9 + 6 =14 - 3 =5 - 4 =16 + 4 =8 - 3 =10 + 5 =6 - 6 =13 + 3 =11 - 1 =14 - 4 =14 + 3 =8 + 3 =7 - 7 =16 + 3 =15 - 4 =12 + 8 =6 + 12 =16 - 6 =8 + 4 =5 + 10 =7 - 5 =13 - 1 =12 - 2 =9 - 7 =13 - 3 =12 - 1 =16 + 3 =15 + 4 =13 - 3 =7 + 9 =12 + 3 =10 + 5 =5 + 4 =16 + 3 =9 - 3 =5 + 3 =5 + 5 =12 - 1 =15 + 5 =11 + 9 =12 + 6 =13 - 1 =10 + 3 =14 - 4 =6 + 7 =6 + 5 =5 - 5 =16 - 4 =7 + 12 =12 + 4 =9 - 3 =15 + 4 =16 - 3 =5 - 3 =12 + 5 =12 + 6 =16 - 4 =11 + 3 =5 - 4 =12 - 1 =8 + 4 =15 - 5 =6 - 3 =15 + 4 =13 - 3 =8 - 6 =6 - 4 =6 + 8 =11 - 1 =15 + 5 =14 - 4 =16 + 3 =12 + 7 =8 - 7 =15 + 5 =6 + 12 =7 - 7 =11 + 3 =11 + 3 =16 + 4 =7 - 5 =9 + 11 =7 + 3 =15 - 3 =6 - 5 =7 + 11 =15 + 5 =5 + 11 =13 - 2 =13 + 7 =共：100 题做对：计时：成绩：20以内的加减混合（不进位）215 + 5 =8 + 3 =14 + 3 =6 - 5 =13 + 6 =9 + 8 =6 + 6 =13 - 2 =6 - 6 =8 + 5 =15 + 5 =9 + 9 =9 - 8 =10 + 3 =6 - 3 =5 - 5 =6 - 5 =10 + 4 =6 - 3 =7 - 5 =9 - 3 =10 + 4 =13 + 3 =5 - 3 =16 - 4 =14 - 3 =14 - 4 =8 + 8 =5 + 15 =7 + 6 =5 - 3 =8 + 3 =9 - 6 =11 + 6 =6 + 3 =16 + 4 =12 - 1 =8 - 6 =12 - 2 =15 - 3 =16 - 4 =8 - 6 =11 + 6 =15 + 4 =8 - 8 =14 - 3 =14 + 3 =12 + 7 =6 + 8 =14 - 3 =11 + 6 =15 + 3 =7 + 4 =13 - 3 =6 + 11 =14 + 6 =11 + 6 =12 + 7 =8 + 10 =14 - 4 =6 - 5 =7 - 4 =10 + 5 =11 + 5 =15 - 5 =5 - 4 =8 + 6 =5 + 6 =11 - 1 =7 - 5 =5 - 5 =7 - 6 =14 + 6 =12 + 8 =14 - 3 =10 + 9 =6 + 7 =8 - 4 =15 - 4 =7 + 12 =8 - 8 =12 + 4 =16 - 5 =8 + 4 =9 - 5 =15 + 4 =15 + 3 =8 - 7 =7 - 6 =16 + 3 =8 - 5 =16 - 6 =11 + 7 =15 + 4 =6 - 5 =13 + 4 =9 + 9 =13 - 1 =8 + 3 =7 + 13 =共：100 题做对：计时：成绩：20以内的加减混合（不进位）314 + 6 =7 + 5 =11 - 1 =14 + 4 =12 + 8 =14 - 4 =16 + 3 =11 - 1 =8 - 3 =12 - 2 =16 + 3 =14 - 3 =16 + 4 =11 - 1 =11 - 1 =7 - 5 =16 - 4 =9 - 4 =15 + 4 =13 + 4 =11 + 7 =10 + 5 =14 + 4 =5 - 5 =5 - 5 =13 - 2 =7 + 13 =7 + 12 =13 - 2 =7 + 5 =12 - 2 =11 - 1 =6 + 14 =8 - 4 =16 - 3 =7 - 4 =6 - 6 =15 + 4 =7 - 4 =13 - 1 =6 + 10 =11 - 1 =8 - 8 =16 - 6 =14 + 4 =15 - 3 =6 + 14 =8 + 7 =12 + 8 =5 + 8 =6 - 5 =11 - 1 =6 + 12 =13 + 5 =8 + 4 =16 + 4 =13 - 2 =14 - 3 =12 + 3 =15 + 5 =16 - 3 =15 - 3 =6 + 14 =8 + 3 =12 - 2 =8 + 12 =5 + 12 =5 - 5 =7 - 4 =9 - 7 =6 - 6 =11 + 7 =14 - 4 =11 + 5 =7 + 3 =10 + 6 =13 + 3 =13 - 2 =7 + 3 =8 + 7 =5 + 13 =12 + 8 =7 - 4 =14 - 3 =15 - 4 =13 + 3 =12 - 2 =7 - 7 =6 - 3 =14 + 4 =13 - 3 =16 + 3 =8 - 4 =7 + 12 =7 - 4 =5 + 4 =16 + 4 =12 + 4 =5 + 6 =9 + 5 =共：100 题做对：计时：成绩：20以内的加减混合（不进位）46 - 5 =9 - 4 =16 + 4 =5 + 3 =7 + 6 =11 + 9 =12 - 1 =7 + 11 =5 - 4 =14 + 3 =10 + 6 =12 + 5 =13 - 2 =15 + 3 =16 + 3 =13 + 3 =5 + 12 =12 - 2 =9 - 8 =13 - 3 =16 - 5 =13 + 3 =6 + 7 =15 - 3 =13 - 2 =11 - 1 =5 + 13 =12 - 2 =6 - 4 =15 + 3 =10 + 8 =14 + 4 =15 - 3 =5 + 10 =5 + 13 =13 + 3 =8 - 3 =15 + 4 =14 + 4 =6 - 6 =12 - 2 =10 + 9 =13 + 4 =8 - 3 =12 - 2 =6 + 14 =16 - 4 =8 + 4 =11 + 4 =6 - 5 =5 - 4 =9 + 10 =16 + 3 =7 - 3 =7 + 8 =5 + 4 =6 + 12 =11 - 1 =10 + 5 =7 + 11 =7 + 4 =12 - 2 =13 - 2 =16 + 3 =5 + 11 =6 - 3 =15 - 4 =14 + 6 =9 - 8 =7 - 7 =13 - 2 =12 - 1 =15 - 4 =7 - 3 =7 - 5 =9 - 5 =5 - 4 =9 - 8 =7 - 4 =16 + 3 =15 + 3 =16 - 3 =11 + 5 =12 + 8 =12 - 1 =9 - 6 =10 + 10 =8 + 11 =6 + 14 =16 + 3 =6 - 4 =7 + 10 =9 + 4 =15 + 3 =8 - 7 =12 - 2 =16 + 4 =11 + 8 =9 + 7 =9 - 8 =共计100 做对：计时：成绩：20以内的加减混合（不进位）57 - 6 =16 + 4 =15 + 4 =6 - 6 =15 - 5 =13 - 1 =8 + 6 =6 + 8 =9 + 8 =9 - 7 =15 - 5 =12 + 6 =7 - 3 =16 + 4 =9 - 8 =13 + 7 =12 + 7 =8 - 4 =7 + 7 =16 + 4 =8 - 7 =6 + 10 =14 - 3 =12 - 2 =9 - 9 =14 + 3 =13 - 1 =15 - 4 =9 - 4 =7 + 9 =11 - 1 =12 - 1 =14 - 4 =7 + 5 =11 + 9 =13 + 3 =6 + 4 =12 + 4 =14 - 3 =8 - 4 =6 - 4 =15 + 5 =11 - 1 =11 + 3 =7 + 4 =13 - 1 =9 - 8 =11 - 1 =6 + 5 =13 + 6 =11 - 1 =15 + 5 =8 - 3 =7 - 4 =6 - 5 =12 - 2 =12 - 1 =11 + 5 =8 - 3 =6 - 6 =7 - 4 =6 + 8 =6 - 3 =16 - 3 =12 - 1 =15 + 4 =15 + 3 =11 + 4 =7 - 5 =15 + 5 =5 - 4 =13 + 5 =12 - 2 =8 - 3 =8 + 5 =8 + 11 =9 + 3 =12 + 5 =5 - 4 =11 + 9 =11 + 4 =15 + 4 =7 - 4 =7 + 13 =8 + 8 =13 - 2 =15 - 4 =16 - 3 =12 - 1 =16 + 3 =16 + 4 =13 + 4 =14 - 3 =9 - 4 =14 + 6 =6 + 8 =11 - 1 =12 + 6 =12 - 1 =15 - 4 =共：100 题做对：计时：成绩：20以内的加减混合（不进位）616 - 3 =8 + 6 =9 + 3 =14 - 3 =14 + 5 =14 + 3 =5 - 3 =11 + 3 =7 - 3 =15 - 4 =15 + 4 =5 - 3 =7 - 5 =11 + 3 =7 - 5 =10 + 7 =16 - 6 =6 - 6 =6 - 6 =16 - 4 =11 - 1 =7 + 3 =10 + 5 =8 - 8 =14 + 3 =10 + 3 =7 - 6 =12 + 4 =12 + 4 =7 - 6 =5 + 14 =16 - 6 =12 + 8 =8 - 8 =9 + 11 =12 - 1 =9 - 7 =11 + 6 =15 + 5 =5 - 4 =6 + 8 =14 + 3 =7 + 8 =12 - 2 =14 + 3 =10 + 8 =12 - 1 =9 - 7 =5 - 3 =14 - 3 =5 - 4 =11 - 1 =5 + 15 =10 + 3 =7 - 5 =5 + 9 =8 + 12 =11 + 5 =13 - 2 =9 + 3 =7 - 4 =16 + 4 =5 + 15 =12 - 1 =10 + 6 =5 - 3 =16 - 5 =8 - 4 =8 - 8 =12 - 2 =16 - 4 =12 - 1 =9 + 7 =11 + 4 =9 - 7 =16 - 6 =6 + 8 =9 - 6 =7 + 11 =16 - 5 =6 - 5 =7 - 4 =12 + 3 =15 - 5 =5 - 5 =13 + 4 =11 + 8 =7 - 6 =15 - 5 =6 - 4 =9 + 11 =13 + 4 =11 + 5 =6 - 5 =5 - 3 =13 - 1 =10 + 3 =11 + 8 =8 - 4 =5 + 3 =共：100 题做对：计时：成绩：20以内的加减混合（不进位）79 + 7 =14 - 4 =15 - 4 =15 - 4 =10 + 9 =6 + 13 =10 + 8 =13 + 4 =10 + 8 =5 + 5 =8 - 5 =8 - 7 =9 - 3 =6 + 11 =11 + 4 =14 - 3 =16 - 3 =14 + 4 =15 - 3 =8 + 7 =14 - 3 =8 - 5 =7 + 7 =13 + 7 =14 - 4 =15 + 4 =14 - 3 =10 + 6 =15 - 4 =8 - 3 =8 - 5 =8 + 7 =8 - 8 =12 - 1 =9 + 7 =6 - 5 =5 + 6 =10 + 10 =10 + 6 =6 + 3 =10 + 3 =9 + 7 =12 - 2 =11 + 9 =5 + 4 =13 + 4 =5 + 5 =6 + 10 =16 + 3 =9 + 9 =8 + 11 =13 - 3 =7 + 12 =5 + 5 =7 - 3 =7 + 13 =9 - 7 =8 + 12 =7 - 7 =15 - 3 =5 - 5 =9 + 6 =14 + 6 =10 + 10 =9 - 3 =14 - 4 =13 + 4 =12 - 1 =14 - 4 =12 - 1 =13 + 5 =6 - 6 =5 + 7 =15 + 5 =7 + 9 =15 - 5 =8 - 6 =7 - 6 =9 + 3 =6 + 8 =16 + 4 =16 + 3 =8 + 6 =5 + 3 =6 - 5 =11 - 1 =15 + 5 =7 + 4 =13 - 1 =6 - 5 =8 + 11 =8 + 9 =15 + 5 =8 - 7 =8 - 8 =16 + 3 =5 - 3 =12 - 2 =6 + 9 =16 - 3 =共：100 题做对：计时：成绩：20以内的加减混合（不进位）86 - 3 =11 - 1 =11 - 1 =16 - 4 =11 + 9 =14 - 3 =8 + 4 =13 + 7 =12 + 6 =6 - 3 =6 - 6 =9 - 5 =7 - 6 =6 - 6 =6 + 11 =6 + 10 =16 - 3 =16 - 6 =5 + 3 =11 - 1 =7 + 10 =8 - 7 =10 + 6 =12 + 7 =15 + 5 =16 + 3 =8 - 5 =12 - 1 =11 + 6 =15 + 5 =8 - 5 =8 - 7 =12 + 6 =14 - 4 =14 + 4 =13 + 3 =6 + 14 =15 - 5 =15 - 3 =14 + 6 =8 - 4 =12 - 2 =9 + 9 =14 + 6 =14 - 3 =7 - 5 =16 - 3 =7 + 6 =15 + 4 =5 - 5 =8 - 7 =7 - 4 =13 - 2 =15 + 3 =8 - 4 =14 + 6 =6 + 14 =5 + 13 =15 - 5 =8 + 8 =9 - 6 =12 + 4 =9 + 6 =7 - 5 =15 - 5 =5 - 4 =15 + 5 =9 + 10 =15 - 3 =16 - 6 =14 + 4 =7 - 5 =8 + 6 =16 - 6 =11 + 4 =11 - 1 =16 - 4 =16 + 3 =6 + 4 =12 - 1 =5 + 6 =6 + 3 =7 - 5 =6 - 5 =11 - 1 =9 + 5 =13 - 3 =11 + 5 =15 - 3 =11 - 1 =9 + 8 =14 - 3 =15 + 4 =9 + 11 =7 - 6 =7 - 6 =10 + 8 =10 + 8 =6 + 14 =13 - 3 =共：100 题做对：计时：成绩：附送：2019年小学一年级口算练习题1000道以上一、口算126 297332340 154235 371293 383154182308 431862703302 722 664 392 209535352394850 201406627 895 633 342504= 11+2=532= 60+8= 807=324265844 3510719184 6610 833 715 605363 5830 287 8710 806=119 803 954 643 984257 622835 8310 1085620 646 653 153 303326 297352 734254435 8710 3 93=4810= 9540=812 6083910 7610 7030489 478 524 438 689402279324 412389508639 378 5620 889759923 427 716 5810=4782675236910 635802 369784658 999722459868 962249402469434 182 388355852594 7810825646 327495 633842604 1120453 308 607254 365 844 523719884760933 185 7055620 646 653 153 303326 297 352 7 342544358710 3 93=4830= 9540=8126083910 7610=7030489 478 524 438 689402 279324412 389302 722 664 392 209535 352394 850 201406 627 895 633 342504= 11+2= 533= 60+8= 807=324 265 844 3510 719126 297332 340 154235 371 293 383154182 308 431 862 703302 722 664 392 209535 352 394 85020116+9= 5+18=17+3= 36+6= 29+5=87+9= 48+8= 35+8= 4+19= 7+26=4+37=29+4=19+8= 29+7= 7+38=9+18=40+6=35+30=62+8=75+5= 23+7= 26+8=19+60= 32+8=16+9=24+6= 5+37=44+7= 67+9=50+8=61+9= 85+4= 91+8= 82+5= 39+1=46+7= 23+7= 37+4= 78+3=27+6= 39+8= 68+5= 9+25= 85+6= 92+4=86+2= 48+7= 39+9=2+38= 56+8= 36+5= 35+6= 46+9=9+25=3+8=46+6= 90+9= 84+7=34+7= 56+3=12+9= 93+3= 58+3= 75+7= 35+6=86+8= 39+2= 27+4= 50+5= 34+9=10+60= 9+50= 10+40= 61+10= 18+5=74+6= 37+2=26+5= 23+7= 47+4=88+3= 47+6= 39+8=68+5= 37+9=26+8= 19+6= 28+5= 53+6= 78+5=23+8= 89+6= 75+5= 86+6= 68+7=87+9= 26+9= 25+6= 50+37= 49+7=87+9=50+8= 61+9= 85+4= 91+8= 82+5= 39+10=46+7= 73+7= 37+4= 78+3= 27+60=39+8= 68+5= 9+25= 35+6= 2+40=86+2=48+7= 39+10= 16+9= 5+18=17+3= 36+6= 29+5= 87+9= 48+8=35+8= 4+19= 7+26= 4+37= 29+4=39+8= 26+7= 7+38= 6+18= 40+6=32+8= 25+5= 13+7= 86+8= 19+60=16+9= 34+6= 5+37= 14+7= 37+9=57+8= 39+2= 27+4= 50+5= 54+9= 70+60=39+50=10+40= 6+10= 18+50= 74+6=37+2=26+50= 23+70= 47+4= 88+3=47+6= 99+1=68+5= 26+8=19+60=48+50=23+6= 78+50= 87+9= 47+9=83+8= 19+6= 75+5= 36+6= 18+7=83+70= 67+40= 88+3= 47+6= 39+8=68+5= 36+8= 19+6= 28+50=53+6=78+5= 17+9= 38+2= 21+32= 100-2=54+31= 32-12= 56-56= 90-80= 25-21=78-8= 45-9= 78-43= 34-23= 89-87=二、求未知加数2+（ ）=10 4+（ ）=8 5+（ ）=10 9+（ ）=9 3+（ ）=7 （ ）+6=10 （ ）+3=9 （ ）+1=10 （ ）+7=10 （ ）+9=10三、连加、连减、加减混合运算2+6+2= 5+3+2= 4+0+3= 1037= 936= 1014= 72+4= 8+26= 104+3= 3+68=四、我会在（ ）里填数。（ ）+6=10 5-（ ）=2 7+（ ）=10 7-（ ）=54+（ ）=8 4-（ ）=0 （ ）-5=4 8+（ ）=8 8-（ ）=3 1+（ ）=8 （ ）+3=7 9-（ ）=2（ ）-2=4 6+（ ）=7 5+（ ）=10 （ ）-3=33+（ ）=9 （ ）-3=0 （ ）-6=2 1+（ ）=10 8+（ ）=10 （ ）+8=9 5-（ ）=5 （ ）-0=0（ ）-2=2 （ ）+9=9（ ）-1=3 2+（ ）=5（ ）（ ）（ ） 91 （ ）40 （ ）（ ） （ ）（ ）（ ）（ ） （ ）（ ）（）（）（ ）（ ）（ ）（ ）五、我能在 里填上、或。5+1 1+5 7-2 7-3 6+3 10-5 0+9 9+0 4-4 4+3 10-7 9-6 3+2 9+1 2+8 8-2 六、我会在 里填上适合的数。 7+ +6 -2 8-71+ 4 +3+4一年级20以内加减法口算题 2+18= 18-6= 16-1= 2+12= 5+11= 17-7= 5+1= 10-1= 12+5= 11-2= 15+1= 19-11= 10+9= 16-7= 2+15= 16-15= 15+3= 9-4= 20-1= 11-10= 6+8= 2+5= 2+6= 10+1= 11-10= 17-16= 13+4= 20-1= 1+2= 20-3= 2+7= 19-6= 15-12= 9+1= 14-1= 5+2= 13+7= 19-4= 3+5= 17+3= 3+8= 8+4= 17+3= 17+3= 4+12= 14+3= 1+14= 1+5= 3+14= 13-3= 10+2= 9-8= 12-8= 2+5= 19-18= 14+3= 17-3= 9-4= 6+13= 13+5= 3+7= 12+3= 5+6= 17-1= 5+2= 7+7= 6+7= 12-11= 20-13= 13+6= 15-5= 20-1= 5+8= 18-12= 7+1= 20-6= 8+6= 3+13= 1+19= 17-16= 7+13= 10-2= 11+6= 3+3= 1+8= 14+2= 9+5= 2+10= 1+12= 8+12= 3+17= 8+4= 8+2= 2-1= 1+4= 9+9= 8+7= 20-18= 19-5= 5+6= 20-3= 17-10= 1+16= 9+1= 9+10= 10-2= 18-17= 13+2= 6+14= 18-8= 9+6= 8-6= 7-5= 19-12= 11+9= 17-12= 16-4= 13-1= 16-8= 2+12= 2+8= 15-8= 19-16= 19-4= 14+3= 3+4= 19-17= 5-1= 15+5= 20-1= 19-10= 7-1= 6-3= 6+13= 11-3= 11+7= 10+4= 20-15= 17-7= 7-6= 19-16= 14+3= 5+8= 20-19= 5+13= 1+8= 9+7= 13-2= 9-1= 17-9= 6-1= 18-4= 14-13= 10-1= 15-2= 12-2= 3+5= 9+5= 13-1= 18-13= 12+8= 11+7= 6+7= 15-5= 16-5= 12-1= 4+5= 13+4= 5-2= 7-2= 5+3= 4+12= 15+5= 12+1= 3+7= 14-6= 7+8= 3+6= 16-6= 19-16= 20-9= 11-9= 13-7= 4+11= 1+18= 19-18= 7+13= 1+7= 13+2= 17-8= 17-7= 2+5= 3-2= 7+10= 16-10= 5+6= 11-10= 18-16= 14-2= 18-2= 11+7= 7+12= 9-1= 10-8= 20-15= 10-9= 20-8= 20-11= 20-5= 20-18= 14+2= 14-10= 6+11= 12+7= 12-10= 14+5= 18-4= 9+8= 6+3= 16-4= 18-12= 1+17= 14+2= 4+4= 10-2= 14-6= 12-6= 12+6= 11-3= 15+2= 5+13= 9+6= 2+1= 16-14= 1+8= 4+12= 3+13= 14-3= 18-5= 7+6= 12+1= 12-1= 19-15= 18-1= 13-11= 16+1= 9-2= 16-7= 16-15= 18-14= 18-5= 16+4= 20-16= 17-5= 20-19= 10-5= 11-4= 1+8= 16-11= 17-5= 6+2= 6+10= 14-9= 18-11= 2+13= 6+8= 13-12= 13-3= 8+5= 19-4= 19-18= 7-4= 6+13= 17-3= 1+17= 20-6= 7-2= 5-2= 7+3= 14-2= 15+4= 14-8= 17-6= 11-2= 20-15= 6+2= 11-8= 9-4= 16-6= 14+1= 2+5= 2+17= 2+10= 8+12= 14+3= 8-2= 17+1= 8-13= 11-9= 18-15= 15-9= 1+8= 19-14= 10+5= 19-12= 20-13= 12-9= 18-6= 14-8= 7+8= 18-14= 11-8= 8-7= 17+3= 1+3= 7-4= 2+5= 5-2= 14-3= 8+9= 13-1= 9+3= 7+12= 17-3= 20-19= 5-1= 20-15= 19-18= 12+2= 15-5= 12-3= 6+4= 7+5= 19-8= 18-11= 19-13= 8+9= 10-4= 7+6= 8+9= 3+15= 12-3= 1+18= 19-12= 15-1= 11+2= 7+4= 15-5= 9-3= 19-9= 17+2= 6+12= 10+1= 9+7= 11-5= 15-1= 1+5= 14+5= 2+11= 4+4= 6-1= 4+15= 2+10= 17-3= 15+2= 6-5= 7+10= 18+2= 5+4= 4+7= 2+14= 6+1= 13-4= 10-9= 19-11= 14+6= 2+18= 16-8= 10-8= 1+12= 8+4= 13+3= 4-1= 1+9= 14-5= 8+1= 4+4= 7+2= 16-2= 3+11= 14-13= 16+4= 19-11= 6+4= 10+9= 1+17= 12+6= 18-5= 17-11= 6-5= 3+16= 3+10= 10-1= 1+6= 17-14= 14+1= 20-1= 10-2= 18-7= 7+10= 9-7= 19-10= 20-4= 6+6= 15-10= 8+11= 14-3= 4+9= 19-1= 16+2= 18-7= 20-13= 14-1= 3+4= 14-5= 2+14= 16-2= 17-2= 6+8= 7+8= 6+3= 8-1= 20-13= 4-2= 20-16= 6+5= 17-13= 5+12= 5+2= 14+1= 5+6= 11-6= 9-2= 4+11= 5+8= 10+9= 5+2= 18-17= 13-1= 3+11= 4+14= 13-2= 13-6= 13-5= 2+4= 8+7= 11+2= 5+3= 4+4= 15-10= 10-9= 6-2= 5+10= 15-4= 14-2= 5+8= 9+6= 2+18= 4-3= 18-2= 5+2= 14-11= 14+2= 4+12= 4+12= 1+2= 5+9= 1+19= 20-7= 20-1= 9-8= 5+10= 19-15= 7+1= 19-14= 14-5= 6+14= 4+16= 10-2= 7-1= 10-3= 19-18= 6-3= 7+5= 14+6= 7+4= 5+10= 17-15= 4+15= 14-4= 14-10= 16-13= 15-2= 1+17= 13-1= 20-11= 4+5= 3+15= 5+2= 9-2= 9-1= 16-14= 10-5= 12+8= 2+1= 1+8= 14-7= 9+11= 3+4= 19-4=