两位数减一位数退位减法口算.doc

1、40-3=77-9=44-9=52-5=71-2=61 -8=25-6=30-5=50-5=93-6=53-6=20-5=73-9=91-5=34-5=74-5=71-9=53-8=22-9=54-5=91-6=11-6=92-6=60-1 =32-7=71-7=90-4=91-5=10-2=53-5=42-7=84-6=31-2=51-2=41 -4=37-9=30-5=41-3=71-4=66-9=98-9=52-6=63-7=73-7=37-8=71-4=87-8=70-9=90-8=44-8=82-3=92-9=54-9=62-5=13-4=56-8=20-2=61 -8=78-9=7

2、8-9=83-5=53-7=70-9=30-7=12-7=50-2=32-7=66-7=54-7=94-8=33-6=98-9=22-9=10-4=70-2=23-7=57-8=53-8=13-5=84-8=44-5=97-8=76-7=15-8=74-8=41 -7=73-4=87-8=11-9=10-5=61-4=13-7=25-9=13-5=76-8=12-8=56-7=60-5=46-7=50-9=31-2=11-5=80-3=48-9=65-9=70-4=50-4=60-8=73-8=84-5=57-9=90-6=70-1 =34-8=22-9=83-8=52-5=63-5=52-5

3、=66-9=71-9=40-9=63-4=54-7=94-5=43-6=12-6=30-6=90-1 =20-2=11-2=41-4=35-9=46-9=52-9=52-6=45-9=71-5=13-4=35-7=63-6=90-2=80-8=61 -6=91-2=17-8=85-7=12-9=80-4=82-7=66-9=23-5=44-7=13-6=75-9=13-5=40-8=55-7=83-7=61-2=20-7=63-6=41-3=24-5=86-9=57-9=42-5=60-2=74-6=71-5=20-8=81-7=12-4=81-9=93-6=66-7=85-7=17-9=84

4、-6=82-5=15-6=81-5=20-8=30-3=52-4=70-3=20-2=82-6=65-8=12-4=46-9=94-7=66-8=10-8=62-4=60-7=24-9=31-7=61-4=25-9=31-3=34-6=80-8=13-9=74-5=21-4=41 -7=50-9=91-5=62-9=43-5=42-6=73-6=85-8=42-5=71 -4=32-7=23-9=22-6=31-6=20-1 =55-7=22-7=32-6=12-6=84-7=53-6=76-8=52-9=51-9=80-7=41 -4=22-6=51-9=95-7=50-1 =76-9=63-9=51-9=26-7=71-6=63-6=14-8=91-3=31-3=15-9=45-7=67-8=14-6=52-7=30-9