DIVIDING BY HEART 

1. Check with multiplying!

480 : 8 = 60, because 60 · 8 = 480
6 300 : 7 = 900, because 900 · 7 = 6 300
42 000 : 6 = 7 000, because 7 000 · 6 = 42 000 

60 : 2 = .......................................................
100 : 2 = .......................................................
540 : 9 = .......................................................
1 800 : 3 = .......................................................
350 000 : 7 = .......................................................

2. Calculate! Check that the answers get the number under line!

   560 : 8 = ..........
2 800 : 4 = ..........
     80 : 4 = ..........
   220 : 2 = .......... 
                   900		     1 800 : 9 = ..........
450 000 : 9 = ..........
    6 300 : 9 = ..........
         90 : 9 = .......... 
                      50 910


3. Find the values of letters!

100 · a = 3 400
a = ....................
a = .......... 

c · 560 = 56 000
c = ....................
c = .......... 

 8 000 : b = 80 
b = ....................
b = .......... 

5 600 : d = 560
d = ....................
d = .......... 


4. Calculate!

3 · 18 : 9 · 100 = ..........
2 · 36 : 9 · 10 = ..........
105 · 10 : 10 = ..........		 72 : 4 · 2 · 100 = ..........
38 : 2 · 2 · 100 = ..........
221 · 100 : 100 = ..........