一年级数学下册口算题
6+40= 45-5= 6+56= 30+9= 29+6=
58-50= 37+5= 23-20= 67-60= 40+9=
63-30= 23-6= 72-60= 50+28= 58-3= 96-90= 47-7= 90-40= 86-20= 25+20= 42-2= 20+80= 68-8= 52-50=50+38= 48+8= 66-20= 61+5= 86-40=7+42= 4+90= 51+8= 90-70= 18+30=5+43= 58-8= 70-7= 60+30= 49+3= 17+50= 20+67= 56+10=
37-7= 57+30=
7+50= 20+23=
86-40= 40+47=
68-5= 25+40=
55-3= 52+30=
77-9= 32+3=
55-8= 7+33=
56+3= 22+50=
30+20= 100-30=
6+30= 88-60= 7+40= 94-6= 38+4=
100-70= 34+4= 74-70= 28+6= 7+64=
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