12345 x 67 =

100000 + 20000 + 400 + 5 + 3000 =

567890 + 12345 + 67890 =

456789 - 123456 =

700000 - 123456 - 20000 =

3 x 123456 =

1000 x 520 =

612000  $\div$  100 = 

123456 $$\div$$  1000