二年级口算比赛54+45=66-33=88-44=93-93=24+35=9+89=30+56=85-8=44-9=60-40=50+25=39-7=43+8=8+56=16+40=2+89=70+8=8+27=58-23=69-28=58-30=37+9=30+19=35+8=7+70=76-34=55+34=5+40=86+2=35—35+25=89-58+30=47+3=46-7=75+8=18+3=63-6=48+4=18+6=33+42=46-34=3×5=80-3= 30+49=6×3= 99-4=23+8= 4×3= 7+55= 4×6= 34-6= 5×5= 4×2= 4×5=46-6= 6+5= 60-7= 6×5= 67-9=18+79= 2×5+30= 60-15+7= 2+6+13=5×6-6= 24+7-8= 6×6-9= 5×2+19=67+21=36+27=17+83=53+35=28+28=65+27=14+46=39+42=36+18=25-13=51-24=30-12=78-61=87-44=24+13-24=19+24-19=44+55=39-7= 54+46= 36+40=42-3=58-5=
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