51 pages of multi-digit multiplication (and tic-tac-toe) for fourth grade and fifth grade. Students solve problems while playing a game, one student solving a Multiplication problem and the opponent checking their work. If they get it right, then an X or O goes in the square. If not, then they lose their turn. Fourth grade: 1 x 2 digits, 1 x 3 digits, 1 x 4 digits, 2 x 2 digits (CCSS.Math.4.NBT.B.5)Fifth grade: 2 x 2 digits, 2 x 3 digits, 2 x 4 digits (CCSS.Math.5.NBT.B.5)PRINT: I create