Python育兒系列-10以內減法、20以內減法、20以內混合運算

主要是隨機生成減法或者混合運算的式子，直接打印輸出，複製到word裏面打印就行了，減少了一點出題的時間。

import random

# 十以內減法
def print10():
    for i in range(0,1000):
        a=random.randint(3,10) 
        b=random.randint(1,a)
        print(a,'-',b,'=   ')


# 二十以內減法
def print20():
    for i in range(0,1020):
        a=random.randint(10,20) 
        b=random.randint(1,10)
        print(a,'-',b,'=   ')
        
# 二十以內減法 10以上
def print20b():
    for i in range(0,1020):
        a=random.randint(10,20) 
        b=random.randint(1,a)
        print(a,'-',b,'=   ')
        
def getTyp():
    #st =['++','--','+-','-+']
    return random.randint(0,3)
##=['++' ]
def calc0():
    a=random.randint(0,18)
    b=random.randint(1,19-a)
    c=random.randint(1,20-a-b)
    rst =str(a)+'+'+str(b)+'+'+str(c)+' ='
    return rst


##=[ '--' ]
def calc1():
    a=random.randint(10,20)
    b=random.randint(0,a-1)
    c=random.randint(1,a-b)
    rst =str(a)+'-'+str(b)+'-'+str(c)+' ='
    return rst

    
##=[ '+-']
def calc2():
    a=random.randint(0,19)
    b=random.randint(1,20-a)
    c=random.randint(0,a+b)
    rst =str(a)+'+'+str(b)+'-'+str(c)+' ='
    return rst


##=[ '-+']
def calc3():
    a=random.randint(10,20)
    b=random.randint(1,a-1)
    c=random.randint(1,20-(a-b))
    rst =str(a)+'-'+str(b)+'+'+str(c)+' ='
    return rst
#二十以內混合運算
def print20mix():
    for i in range(0,1020):
        calctyp = getTyp()
        if calctyp==0:
            print(calc0())
        elif calctyp==1:
            print(calc1())
        elif calctyp==2:
            print(calc2())
        elif calctyp==3:
            print(calc3())
                  
        
## 20以內混合運算        
print10()
## 20以內混合運算        
print20mix()
## 20以內混合運算        
print20mix()