1st Grade Problem Solving Return to Math 4Littles Get the new 1st Grade Journals! Also available for 2nd-5th grades. Shop Now! 1st Grade Problem Solving: Additive Comparison 1st Grade Problem Solving: Part-Whole Addition 1st Grade Problem Solving: Part-Whole Missing Addend 1st Grade Problem Solving: Part-Whole Subtraction Page 1 of 11