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Subtractive oral arithmetic problems in the first volume of mathematics in the second grade of primary school
96- 13= 70-6= 37-29= 6 1-35= 97-39= 7 1- 13= 9 1-75= 72-46= 48-4= 73-7 1= 90-35=

57-2= 96-70= 48-39= 66-6= 22-22= 49- 12= 94-56 = 44- 18= 63- 17= 42-27= 97-83= 7 1-59= 76-65= 63-3= 73-52= 63-7= 54- / kloc-0/3= 68-60= 57-48= 84- 1= 92-3= 89-8 1=

72- 19= 88-62= 85-70= 89-8 1= 5 1- 1 1= 9 1-2= 92-40= 82-79= 82-73= 83-7= 92-82=

83- 19= 4 1-40= 82-28= 40-2 1= 65-0= 96-26= 97-84= 20-9= 97- 13= 85-44= 90-85=

40- 15= 16- 1 1= 83- 12= 99-86= 75- 13= 47-36= 65-49= 60-49= 73-67= 60- 13= 34-26=

7 1-68= 89-40= 63-24= 8 1-6= 48- 15= 60-2 1= 39- 18= 64-5 1= 92-38= 90- 14= 96- 13=

70-6= 37-29= 6 1-35= 97-39= 7 1- 13= 9 1-75= 72-46= 48-4= 80-54= 73-7 1= 90-35= 57-2= 96-70= 66-6= 2 2-22= 49- / kloc-0/2= 94-56 = 44- 18= 63- 17= 42-27= 97-83= 7 1-59=

76-65= 63-3= 73-52= 63-7= 54- 13= 68-60= 69-34= 78-28= 66-4 1= 35- 17= 75-34=

72- 19= 69-32= 75-55= 7 1-43= 66-39= 82-48= 32- 18= 69-39= 49-22= 67-64= 67-34= 90-46= 33- 1 3= 80-46= 68-22= 90-6 5= 80-66= 72- 17= 95-66= 0-3 1= 82- 17= 50-29= 74-65= 92-27= 76-38=