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