发布时间 : 星期三 文章小学二年级数学速算与巧算更新完毕开始阅读c029a9c7793e0912a21614791711cc7931b778f2
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89-37= 48+23= 86-54= 84-48= 56-28= 51-39= 57-48= 54+28= 40-29= 78-69= 52-27= 54+29= 27+36= 48+48= 72-37= 63-27= 62+19= 65-36= 60+25= 53+28= 54+37= 98-56= 42-19= 44+39= 62+12= 72-54= 76-37= 56-36= 69-31= 37-25= 86-45= 40-12= 64+36= 55+38= 78-29= 36+27= 45-16= 34+58= 43-25= 52+16=
59+19= 35+17= 75-59= 70+19= 22+55= 16+27= 54-29= 67-60= 93-56= 50+22= 70-42= 83-56= 71-55= 15+57= 37+18= 46-38= 42-19= 53-29= 73+14=
62-59=
55-47= 60-38= 24+38= 16+23= 46-28= 43-27= 79-64= 85-50= 23+32= 62-48= 72-54= 76-37= 56-36= 39+38= 47+19= 65-26= 74-18= 63+28= 36-27= 52-34=
31
73+29= 36-25= 42-23= 57-16= 48-26= 63+25= 98-48= 42-32= 42-19= 22+55= 16+27= 54-29= 67-60= 93-56= 46-19= 25+8= 44-17= 36+17= 22+18= 82-33=
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67-28= 58-29= 46+27= 35-16= 24+58= 84+9= 47+18= 56-38= 42-29= 53-39= 29+35= 47+29= 75-26= 74-68= 43+28= 45+9= 76-19= 45+8= 64-17= 56+17= 63-25= 27+16= 52-17= 77-28= 68-39= 26+17= 45-36= 74+18= 53-35= 53-35= 63+37= 47+19= 54-45= 72-45= 96-59= 56-27= 86-58= 52+23= 35+17= 86-45=
73+24= 62-49= 91-37= 84+19= 47+28= 66-48= 72-39= 83-49= 63+34= 63+34= 64+24= 55+38= 71-15= 46-28= 43-27= 79-64= 85-50= 23+32= 76-18=
55+17=
56-27= 62-34= 36+26= 39+35= 67+29= 85-56= 78-39= 83+17= 64-45= 64-45= 53+16= 40-17= 61-39= 72-17= 76-38= 75+17= 48-36= 53+36= 42-37= 63-49=
31
22+28= 62-35= 81-35= 35+19= 84-29= 72+18= 74-37= 46+27= 32+19= 32+19= 82-37= 79-28= 85+7= 68-57= 42+59= 60-37= 60-37= 46-38= 75+17= 92-59=
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40-12= 63-37= 50+22= 75-33= 12+29-19= 38-16= 70-42= 83-56= 48+35= 69+10-36= 42+13= 75-55= 15+56= 38+46= 27+12-28= 42-16= 62-56= 48-26= 42-19= 67+27-37= 33-17+15= 62-18+24= 86-12-15= 88-34+18= 51-42+53= 75+24-23= 63+12-42= 21+82-60= 44-5+12= 67-47+22= 65-33-18= 76-63+1= 43-29+13= 17+27-10= 75+15-30= 25-9-12= 23-14-9= 11+16-9= 12+18-15= 30-16-9=
75-36+10= 54+21+18= 57-33+31= 85-36+27= 77-65-6= 32+45-38= 53-37+15= 36+34-14= 100-76+22= 21+82+17= 68-65-3= 63+18+11= 85-28-28= 55+38-15= 92-6+11= 73-28= 54-28= 23-10-5= 25-16-7=
28-2-19=
72-54+12= 53-29+19= 36-27+9= 12+79-62= 71-52+36= 81-45+36= 63-23+28= 73+12-71= 72-45+32= 83-27+10= 54-52+17= 65+15-47= 77-38+42= 54-41+36= 42-37+54= 36+45= 39-27= 61-15= 56-38= 3+29=
31
65-39-15= 35+12-28= 77-19-16= 51-27+28= 75-24+26= 24-16+40= 48-26+18= 21+82-60= 54-21-18= 54+21-18= 88-51-24= 77-34+55= 60-34+35= 99-88+77= 77-64+22= 28-19-9= 3+14+7= 82-36= 37+48= 51-18=
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30-11-13= 12+3+14= 13+12+5= 16+12-19= 18+11-13= 26-7-18= 30-16-14= 30-11-13= 26-5-16= 28-19-3= 46+14= 75-46= 54-26= 38+27= 62-38= 82-34= 60-25= 80-9= 9+34= 18+26= 26-18-8= 19-8+11= 30-8-16= 30-13-8= 30-15-14= 10+15+4= 9+10+11= 24-8+9= 11+13-15= 26-17+8= 23-15+5= 26-8+17= 23-19+15= 25-19+14= 24-16+15= 26-18+15= 28-12+6= 26-18-2= 25-6+8= 26-8+4=
25-7-13= 26-17-5= 15+3+10= 12+15+2= 29-5-7= 13+2+14= 30-15-4= 12+17+1= 24-17-5= 4+13+9= 13+15-19= 16-9+15= 28-21-7= 12+5+13= 25-18+17= 25-9-13= 15+17-14= 11+13-15= 14-12+18=
23-5-16=
51-18= 52-16= 61-19= 34+38= 38+36= 28+27= 35+26= 46+29= 33+49= 37+16= 51-34= 54-28= 56-27= 64-13= 58+16= 27-19= 38-9= 37-18= 26-17= 35-17=
31
54-26= 34+38= 76-54= 27-19= 35+16= 54+28= 28+39= 38+36= 37-21= 37-37= 56-27= 64-13= 19+28= 25+37= 91-8= 73-29= 38+36= 28+27= 50-28= 80-34=