2023 Brain Games, Number Search Puzzles by Addition, Subtraction and Multiplication Volume 1: 6,000 Questions (300 Puzzles) Hard Level, Practice you brain for Adults and Seniors or students (CCSS 3.NBT.A.2, CCSS 4.NBT.B.4, CCSS 4.NBT.B.5, CCSS 5.NBT.B.5)Are you ready to play the game? Welcome to the new super challenge with this amazing game, Number Search Puzzle by Addition, Subtraction and Multiplication! For this game, you have to solve the problem before you can find the number. Containing n