A-A+
口算.60+30=66-3=75-40=36+23=10+30+52=90-20=30+48
问题详情
口算.
参考答案
60+30=90,66-3=63,75-40=35,36+23=59,10+30+52=92,90-20=70,30+48=78,74-50=24,54-21=33,80-50+40=70,10+40=50,83+6=89,56+40=96,6+32=38,25+40-32=33,43+2=45,45-20=25,68-30=38.0+40=40,70+20-60=30.故答案为:90,63,35,59,92,70,78,24,33,70,50,89,96,38,33,45,25,38,40,30.
考点:口算