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