# 3 # Introduction to oral arithmetic is to use the brain to calculate and use oral narration to remember the results at that time. This method is used for quick calculation, and regular practice is helpful to improve intelligence. It has also become the mainstream calculation method today. The following is the related information of "two-digit addition and subtraction oral calculation in the first grade of primary school", I hope it will help you.

An oral arithmetic problem of two-digit addition and subtraction in the first grade of primary school

98-59= ? 6 1-34= ? 33-5= ? 40-26= 98- 1 1= ? 6 1-6= 77-35= 60- 12=

96-37= ? 77-2 1= ? 56-5= ? 92-76=

53-53= ? 4 1-2 1= ? 80-67= 54-22=

19-8= 58-54= ? 69- 10= 56-23=

90-3= 86-43= ? 72- 19= 80-4 1=

60- 14= 43-29= 8 1-56= 26+53=

16+52= 75-60= 84-64= 25- 12=

36-28= 74- 19= 25+47= 39- 1 1=

7 1-27= 66-23= 67-22= 15+39=

68-30= 36+4 1= 95-50= 75+2 1=

88-50= 3 1+6 1= 55-40= 23+54=

36-20= 35+64= 47-20= 43+ 12=

68-50= 73+ 15= 58-40= 22+37=

16- 10= 52+33= 93-70= 66+ 13=

46+49= 23+28= 23+38= 16+26= 39+ 15=

70-58= 18+68= 39+48= 63-46= 38+28=

77-59= 63-56= 39+ 15= 95-69= 27+69=

8 1-57= 56+38= 49+37= 40- 18= 37+56=

29+67= 90-33= 29+44= 73-45= 57+35=

Two-digit addition and subtraction oral arithmetic problems in grade one of second primary school

65+37= 6 1+29= 63+26= 83+ 17= 57+ 10= 3+50= ? 7+ 12= ? 69+ 19=

49+20= 20+ 13= 9+85= ? 27+24=

23+ 13= 37+58= 6+76= ? 34+4 1=

45+37= 35+62= 37+3 1= 19+30=

30+38= 37+ 17= 39+52= 85+7=

94-32= ? 83-32= ? 26- 10= 54- 15=

19-3= 75-58= ? 54-48= 80-48=

83-47= ? 60-47= ? 85-48= 67-3=

67-4= 55-8= 17- 10= 6 1-7=

4 1-40= 25+43= 85-80= 46+22=

94-50= 2 1+66= 62- 10= 73+2 1=

38-20= 1 1+33= 92-60= 53+32=

78-30= 82+ 17= 48-30= 12+26=

45-40= 63+26= 97-40= 3 1+55=

95-59= 48-39= 57+25= 28+57= 8 1-34=

57+ 16= 96-57= 59+23= 3 1- 19= 40-28=

47-29= 16+29= 56+28= 64+27= 96-47=

73-36= 8 1-24= 80-37= 82-44= 16+ 19=

48+ 17= 87-48= 80-47= 33- 17= 49+27=

Two-digit addition and subtraction oral arithmetic problems in grade three and grade one of primary school

96-70= 34+25= 72- 10= 36+ 12= 64-20= 54+24= 83-60= 1 1+87=

69-30= 32+22= 54-50= 12+73=

93-80= 44+34= 8 1-40= 64+34=

55-40= 74+23= 52-30= 64+ 13=

17+62= 33-30= 57-23= 44-32=

98-87= 94- 14= 25+30= 62-49=

9 1-89= 87-20= 22+4 1= 9 1-39=

78-47= 86-25= 93-45= 25- 12=

60- 14= 43-29= 8 1-56= 26+53=

16+52= 75-60= 84-64= 25- 12=

36-28= 74- 19= 25+47= 39- 1 1=

7 1-27= 66-23= 67-22= 15+39=

70-58= 97- 19= 70-48= 90- 18= 18+68=

98-29= 4 1-23= 7 1-45= 17+ 14= 39+48=

39+38= 4 1- 13= 15+ 16= 66+ 19= 63-46=

38+28= 78-69= 46+39= 50-2 1= 77-59=

54-38= 62-36= 6 1-49= 7 1-35= 63-56=