Appendix A: Problem Set
Change Increase / Result Unknown
7 students are in the classroom. 2 more students join them. How many students are in the classroom now?
Change Increase / Change Unknown
7 students are in the classroom. Some more students join them. Then there were 9 students. How many students join the first 7?
Change Increase / Initial Unknown
Some students are in the classroom. 2 more students joined them. Then there were 9 students. How many students were in the classroom at the beginning?
Change Decrease / Result Unknown
9 students were in the classroom. 2 students went home. How many students are in the classroom now?
Change Decrease / Change Unknown
9 students were in the classroom. Some students went home. Now there are 7 students. How many students went home?
Change Decrease / Initial Unknown
Some students were in the classroom. 2 students went home. Then there were 7 students in the classroom. How many students were in the classroom in the beginning?
Compare More / Difference Unknown
Sam has 10 French fries. Emily has 6 French fries. How many more does Sam have than Emily?
Compare More / Greater Unknown
Sam has 4 more French fries than Emily. Emily has 6 French fries. How many French fries does Sam have?
Compare More / Smaller Unknown
Sam has 4 more French fries than Emily. Sam has 10 French fries. How many French fries does Emily have?
Compare Fewer / Difference Unknown
Sam has 10 French fries. Emily has 6 French fries. How many fewer does Emily have than Sam?
Compare Fewer / Smaller Unknown
Emily has 4 fewer French fries than Sam. Sam has 10 French fries. How many French fries doe Emily have?
Compare Fewer / Greater Unknown
Emily has 4 fewer French fries than Sam. Emily has 6 French fries. How many French fries does Sam have?
Part-Part-Whole / Whole Unknown
Sam has 4 cookies for lunch. He has 2 more for dinner. How many cookies does Sam have?
Part-Part-Whole / Whole Unknown
Sam ate 6 cookies today. He had 4 of them for lunch. How many did he have for dinner?
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