北湖小学二年级上学期计算能力测查(二)一、口算50+26=92-4=61+25=72-20=3+45=67-6=44+53=60+39=75+7=83-13=21+69=39-23=43-37=7+21=57-26=36-28=70+19=53+8=99-14=44-38=72-9=74-34=66+7=44+41=64-45=90-5=62+25=46-30=80-51=71-6=56-3+9=81-7-70=74-(80-6)=37+10-5=55+30+8=42-(6+34)=...
时间:2024-11-14 12:47栏目:发言稿