http://3.bp.blogspot.com/_HU9zn3YtoD4/SfqHbCuu4NI/AAAAAAAAAW4/0g2o45kbNXc/s400/DoesNotEqual.png

http://www.solving-math-problems.com/image-files/sym_less_than_or_equal_sign-blue.jpg

http://www.himeztess.hu/adat/kitchencraft/images/MIpal0717.jpg

http://www.palantamisszio.hu/sites/default/files/szabone_lovas_annamaria/gyerekeknek.jpg

http://www.nauk.si/materials/62/out/premica_cela_stevila.png

http://www.nauk.si/materials/410/out/absolutna_vrednost_a-a.png

http://webspace.ship.edu/kjpres/WebQuests/absolute%20value_files/brownbug2.gif

http://t2.gstatic.com/images?q=tbn:ANd9GcTH8JOQYOjY3wYHePVGmo-vhCn3MzOJuUQOohN6w4feDH5Tf9OtVA

http://phet.colorado.edu/sims/arithmetic/arithmetic_hu.html

http://eu.ixl.com/math/grade-3/multiplication-patterns-over-increasing-place-values 

http://eu.ixl.com/math/grade-3/multiply-a-one-digit-number-by-a-larger-number

http://eu.ixl.com/math/grade-3/multiply-three-or-more-numbers

http://eu.ixl.com/math/grade-6/multiply-three-or-more-numbers

http://t0.gstatic.com/images?q=tbn:ANd9GcQv_F5I-WGBkSjpdXDBXSY1_QDWl6ciXpUKZAjJ8nvnO21-fVXJ