Zero in multiplication (3rd grade math)
We focus on how zero works in multiplication. For example, 4 x 0 means four groups of zero... which totals nothing, a big fat zero! The same happens with 0 x 9, or zero groups of 9. We review how 1 works, also. Mathy my mascot would rather study number 9 though, so he has to insert a problem... can you solve 9 x 9? :)s.
See also
Understanding multiplication word problems, part 2
Math Mammoth Grade 3 curriculum