51+20=
7+52=
58-5=
53-50+5=
69-7=
6+8=
17-9=
75-60+80=
90-10=
40+38=
64-40=
85-30+2=
39+40=
15-8=
30+60=
32+50-40=
( )
(个)
先算:
再算:
5+70= 49-7= 20-5= 84-4=
59-30= 66+9= 38-9= 27-3=
12-5= 34+7= 54-5= 17+6=
21-5+8= 71-40-20= 90-(13+7)=
37+(9-3)= 52+30+7= 56-(10-4)=
61-5= 79-37= 58+34= 24-8=
7+76= 60-9= 17-4= 13+5=
36+56= 33-9= 88+9= 53-6=
75-44= 39+14= 100-7= 28+43=
83-50= 68-37= 34+25= 24-8=
16-8= 2+48= 19-7= 29+2=
57+3= 13-6= 12-8= 57+7=
16+3= 53+9= 6+27= 3+78=
24-6= 86-40= 15-9= 46+23=
65-5= 90-7 = 50+34= 28-19=