整十数加一位数及相应的减法练习题30+1=1+30=31-1=31-30=30+2=2+30=32-2=32-30=40+3=3+40=43-3=43-40=40+4=4+40=44-4=44-40=40+5=5+40=50+6=6+50=56-6=56-50=50+7=7+50=57-7=57-50=50+8=8+50=58-8=58-50=60+9=9+60=69-9=69-60=70+1=1+70=71-1=71-70=70+2=2+70=72-2=72-70=3+70=70+3=73-3=73-70=70+4=4+70=74-4=74-70=70+5=5+70=75-5=75-70=70+6=6+70=76-6=76-70=70+7=7+70=77-7=77-70=70+8=8+70=78-8=78-70=70+9=9+70=79-9=79-70=90+1=1+90=91-1=91-90=90+2=2+90=90+3=3+90=93-3=93=90=90+4=4+90=94-4=94-90=90+5=5+90=95-5=95-90=90+6=6+90=30+1=1+30=31-1=31-30=30+2=2+30=32-2=32-30=40+3=3+40=43-3=43-40=40+4=4+40=44-4=44-40=40+5=5+40=50+6=6+50=56-6=56-50=50+7=7+50=57-7=57-50=50+8=8+50=58-8=58-50=60+9=9+60=69-9=69-60=70+1=1+70=71-1=71-70=70+2=2+70=72-2=72-70=3+70=70+3=73-3=73-70=70+4=4+70=74-4=74-70=70+5=5+70=75-5=75-70=70+6=6+70=76-6=76-70=70+7=7+70=77-7=77-70=70+8=8+70=78-8=78-70=70+9=9+70=79-9=79-70=90+1=1+90=91-1=91-90=90+2=2+90=90+3=3+90=93-3=93=90=90+4=4+90=94-4=94-90=90+5=5+90=95-5=95-90=90+6=6+90=1
