Find the product of the following:

  
Fill in all the gaps, then press "Check" to check your answers. Use the "Hint" button to get a free letter if an answer is giving you trouble. You can also click on the "[?]" button to get a clue. Note that you will lose points if you ask for hints or clues!
(-20) * (-45) =

(-9) * (-8) =

(-30) * 40 * (-1) =

(-50) * 2 * (-10) =