# 1เลือกประเภท1. What is the first step in solving a problem logically?A. Jump to a conclusion B. Try random solutions C. Understand the problem D. Ask someone else
# 3เลือกประเภท3. Mary had 5 red balls and 3 blue balls. She gave 2 red balls to her friend. How many balls does she have left?A. 6 B. 8 C. 5 D. 7
# 4เลือกประเภท4. Which of the following is a good strategy to solve a difficult problem?A. Give up quickly B. Break it into smaller steps C. Ask someone else to do it D. Keep guessing