23+4= 15+9= 41-37= 14+31= 25+13= 44-25= 22-12= 34-32= 18+9= 23+9= 30-25= 28+1= 27-12= 41-5= 6+39= 25-15= 48-40= 5+37= 44+2= 43-5= 31+14= 9+34= 29+13= 45+4= 18+8=
32-7= 48-9= 41-17= 17+15= 18+6= 33-11= 30+8= 26-2= 50-41= 21+17= 21+18= 50-26= 31+14= 34-8= 4+31= 37-15= 29-18= 45-7= 36-11= 38+8= 16+31= 41-11= 43-21= 40-4= 6+17=
8+19= 47-36= 22-21= 21-21= 22-21= 6+17= 31-9= 1+23= 34-17= 39-4= 42+2= 29-10= 20-3= 30-2= 40-16= 5+27= 14+7= 39+2= 21-4= 6+23= 49-35=
39+3= 20-4= 5+31= 49-33= 40-12= 25-11= 44-37= 36-16= 36-32= 30-26= 27-16= 32-3= 28-20= 37-12= 43-3= 22-1= 42+6= 25-14= 21-11=
50以内口算第31页/ 共60页
23+26= 15+19= 17+33= 25+19= 20+30= 34+14= 29+12= 23+25= 28+22= 13+19= 2+36= 36+8= 28+14= 4+28= 8+22= 36+9= 32-18= 16+24= 34+13= 10+24= 38+2= 48-8= 1+25= 22-17= 2+28= 31+13= 36+1= 30-23= 4+42= 35-20= 24-10= 37-24= 15+12= 26-25= 23+5=
31+13= 27+22= 6+27= 35-1= 29-22= 35-2= 49-45= 22+19= 29-1= 48-31= 23+25= 48-13= 27+16= 50-2= 32-9= 28+13= 37-3= 45-18= 28-18= 40-5= 30-18= 24-9= 5+39= 22+1= 32-12=
27-5= 32-11= 40-16= 48-38= 12+14= 35-3= 27-12= 33-31= 11+21= 18+21= 46-30= 29-21= 42-35= 43-19= 26-22= 13+13= 34-24= 35-17= 21+14= 4+18= 9+39= 46+1= 28-19= 26-12= 44-30=
4+25= 43-8= 42+7= 20+24= 36-36= 37+5= 25-10= 16+8= 49+1= 4+23= 31+3= 27-3= 40-11= 29-23= 41-24= 9+12= 25-4= 2+27= 12+29= 37-20= 34-32= 17+25= 17+23= 40-23= 25+1=
50以内口算第32页/ 共60页
31+19= 50-30= 1+45= 43-42= 7+40= 5+17= 29-8= 2+40= 45-14= 28-1= 17+17= 21-13= 6+21= 29-14= 43-13= 45-29= 22+7= 9+33= 48-34= 38-11= 20+4= 43-12= 13+11= 6+16= 24-5=
13+8= 38+8= 13+8= 49-36= 43-21= 26-4= 4+38= 4+20= 25-20= 30+5= 25-9= 24-22= 20-15= 29-25= 31-30= 5+17= 40+5= 41-32= 27-20= 21-14= 40-31=
37+12= 17+25= 20-5= 46-29= 38-12= 30+1= 38+8= 25-14= 21-9= 1+45= 23+11= 20-17= 46-27= 28+19= 24+9= 28-13= 7+30= 9+25= 24-10= 35-25= 6+36= 19+27= 3+22= 35-13= 25-24=
31-20= 37+4= 25-5= 25-22= 24-14= 11+21= 30-14= 31-16= 29+19= 25-12= 29-11= 23-17= 4+33= 35-35= 33+13= 38-15= 28+8= 4+31= 36-28= 34-26= 28-15= 29+13= 8+22= 25-20= 30-16=
50以内口算第33页/ 共60页
20+23= 22+24= 17+31= 17+18= 33+14= 50-25= 50-33= 41-21= 46-34= 30-4= 17+33= 38-19= 41-28= 50-31= 32-10= 44-35= 34-19= 30-19= 40-17= 5+42= 22-10= 39-37= 41-18= 29+20= 27+9= 23-22= 46-29= 28-19= 29-23=
39-19= 4+40= 29-28= 30+8= 22-3= 36+6= 15+7= 32-18= 8+15= 24+1= 46-39= 45-19= 48-38= 48-5= 32-28= 44-33= 30-15= 29-27= 28-25= 21+1= 49-2= 9+29= 24+19= 18+15= 7+26= 13+11= 28+14= 24+13= 2+43= 21+4= 20+18= 41-37= 32-14= 36+3= 37-5= 40-13= 35-19= 22+25= 46-14= 20-7= 49-45= 45-33= 24-9=
1+31= 47-39= 11+39= 48-39= 34-30= 16+28= 23+10= 47-9= 21+29= 24+12= 36-22= 23+27= 2+18= 35+12= 47-35= 5+20= 39-23= 37+3= 23+18= 30-5= 48-44= 27+11= 39+9= 31-15= 2+27=
50以内口算第34页/ 共60页
39+11= 22+19= 21+16= 30+14= 28+18= 11+17= 31+11=
38-35= 50-11= 42-12= 28+1= 15+24= 15+22= 6+15= 6+16= 3+27= 9+29= 12+8= 1+46= 21+25= 39+10= 11+12= 16+15= 37+13= 7+37= 39-37= 46-40= 43-11= 21-16= 34+3= 15+34= 21-1=
23-4= 8+27= 10+20= 6+19= 26-6= 13+27= 10+10= 20-9= 42+1= 4+25= 44-1= 31+5= 1+49= 41-15= 18+30= 3+27= 22+9= 24-21= 39+9= 37+5= 39-33= 31-26= 30+5= 24+25= 33-12=
10+17= 27+10= 41-36= 25+12= 32-4= 1+45= 39+6= 43-11= 27-9= 46-18= 24-23= 10+15= 34-8= 17+32= 37-4= 2+37= 26+22= 24+18= 42-17= 6+23= 37+5= 35-30= 31-14= 20+13= 24-23=
29+4= 37-5= 25+24= 33-18= 30-24= 3+27= 36-28= 36-10= 9+12= 28+16= 39-15= 49-40= 28+14= 36-6= 16+15= 25+18= 24+4= 23+19= 21+20= 27-6= 7+43= 4+46= 31+13= 26+10= 39+3=
50以内口算第35页/ 共60页