二位数减一位数退位减法算式100道PPT
35-4=64-9=70-5=93-8=36-5=63-2=92-5=34-3=45-4=68-6=77-2=89-4=37-6=61-7=99-8=30...
35-4=64-9=70-5=93-8=36-5=63-2=92-5=34-3=45-4=68-6=77-2=89-4=37-6=61-7=99-8=30-5=67-9=74-2=96-4=38-3=60-7=72-4=85-9=39-2=66-5=78-8=43-4=97-6=40-9=69-3=75-8=88-2=32-6=54-7=81-9=48-5=65-3=90-10=79-4=86-2=41-5=95-7=30-7=76-4=60-5=94-6=44-3=87-8=50-9=71-10=