Mathematical oral calculation problems within 50 in the first grade of primary school
36-9= 78-4= 65-8= 99-9= 72-2= 45-9= 86-8= 96-2=
24-9= 40-2= 46-9= 43-4=
18-2= 38-8= 35+5= 85+2=
59-4= 78+ 10= 82-5= 64+6=
32+7= 49-5= 63+3= 84-2=
60-4= 1 1+20= 45-3= 30+8=
60-7= 25+4= 36-5= 84+4=
52-3= 7 1+9= 88-4= 76+0=
93-3= 18+5= 70-5= 56+20=
47-8= 52-4= 43-8= 68-9= 40-2=
27-9= 32-4= 4 1-2= 38-9= 30-2=
72-2= 66-4= 39-2= 20-9= 53+5=
35+2= 39-4= 8+50= 20- 1= 40+6=
62+7= 89-5= 63+3= 34-2= 50-4=
18-2= 10+7= 7+5= 8+ 10= 7+3=
20-4= 19-4= 15+2= 16-7= 8+5=
20-6= 1+ 18= 1+ 13= 7+3= 15-5=
2+ 17= 8+8= 12-3= 1+ 16= 20- 1=
1+9= 4+ 14= 14+2= 18- 10= 3+ 16=
10+ 10-4= 10-7- 1= 20-8+ 1= 2+ 1+ 12=
2+3+ 1 1= 15-5- 10= 6+8- 12= 16+2-7=
2+ 17-9= 2+ 18-5= 20- 19+ 13= 8-6+6=
20- 17+ 13= 5+3-4= 1+ 1 1-4= 8-8+5=
8+8= 12-5= 16+2= 4+3= 20-2=
20-2= 6+ 10= 1 1+8= 2+ 18= 9+ 10=
8+6= 13-4= 3+ 14= 5+4= 19- 1=
7+ 1= 13-2= 8- 1= 16-9= 15+5=
5+5= 10-2= 15+4= 13-5= 6+6=
5+6= 10-3= 17- 1= 15-7= 18-2=
Mathematical oral calculation problems within 50 in grade two and grade one of primary school
12+6= 29-7= 33+2= 3+40= 15+4= 23+5= 37+ 1= 29-3=
38-3= 15-4= 18-2= 30+8=
43+ 1= 86+2= 70+3= 30-2=
72-2= 66-4= 39-2= 20-9=
53+5= 35+2= 39-4= 8+50=
20- 1= 40+6= 62+7= 89-5=
63+3= 34-2= 50-4= 1 1+2=
53-3= 60+8= 80-7= 32+4=
26-5= 84+4= 35- 10= 7 1+9=
18-4= 66+ 10= 83-3= 7 1+5=
60-5= 36+3= 58+30= 28-7=
87- 10= 80-6= 1 1+9= 80-3=
95-4= 64+3= 98-4= 25+7=
8+8= 12-5= 16+2= 4+3= 20-2=
1+ 14= 1+ 1 1= 10+5= 19- 12= 2+ 14=
5+3= 10+8= 13-3= 20- 1= 12-5=
15+3= 8+3= 2+ 1 1= 1+7= 16+2=
17+2= 18+2= 4+ 16= 12-2= 4+3=
20-2= 6+ 10= 1 1+8= 2+ 18= 9+ 10=
9+ 10= 19- 1= 15+5= 6+6= 5+6=
18-2= 10+7= 7+5= 8+ 10= 7+3=
20-4= 19-4= 15+2= 16-7= 8+5=
20-6= 1+ 18= 1+ 13= 7+3= 15-5=
2+ 17= 8+8= 12-3= 1+ 16= 20- 1=
1+ 12-7= 4- 1+8= 15+3- 10= 19- 1 1+8=
10+ 10-4= 10-7- 1= 20-8+ 1= 2+ 1+ 12=
2+3+ 1 1= 15-5- 10= 6+8- 12= 16+2-7=
2+ 17-9= 2+ 18-5= 20- 19+ 13= 8-6+6=
Mathematical oral calculation problems within 50 in grade three and grade one of primary school
62-2= 83+5= 83+ 10= 10+8= 56+20= 64+6= 65+3= 15-3=
30-3= 32+6= 29-7= 35+2=
60+8= 39+ 10= 76+ 10= 70+30=
48-9= 47-8= 52-4= 43-8=
68-9= 40-2= 27-9= 32-4=
4 1-2= 38-9= 50-8= 63-9=
88-9= 75-9= 92-3= 42-7=
7 1-6= 58- 10= 47-8= 26-7=
52-3= 69- 10= 63-5= 80-2=
20- 17+ 13= 5+3-4= 1+ 1 1-4= 8-8+5=
64+6= 65+3= 15-3= 30-3=
48-30= 95-40= 8 1-2= 60+8=
39+ 10= 76+ 10= 70+30= 48-9=
1 1+2= 53-3= 60+8= 80-7= 32+4=
8+6= 13-4= 3+ 14= 5+4= 19- 1=
7+ 1= 13-2= 8- 1= 16-9= 15+5=
5+5= 10-2= 15+4= 13-5= 6+6=
5+6= 10-3= 17- 1= 15-7= 18-2=
1+ 12-7= 4- 1+8= 15+3- 10= 19- 1 1+8=
1+9= 4+ 14= 14+2= 18- 10= 3+ 16=
1+ 14= 1+ 1 1= 10+5= 19- 12= 2+ 14=
5+3= 10+8= 13-3= 20- 1= 12-5=
15+3= 8+3= 2+ 1 1= 1+7= 16+2=
17+2= 18+2= 4+ 16= 12-2= 4+3=