Question: Mrs. Watson is grading 120 final exams from her American History class. On Monday, she grades 60% of the exams. On Tuesday, she grades 75% of the remaining exams. On Wednesday, how many more exams does she need to grade?
Answer with step-by-step thinking: On Monday, Mrs. Watson grades 120 x 60% = 72 final exams. At the end of Monday, she has 120 - 72 = 48 exams left to grade. On Tuesday, she grades 48 x 75% = 36 final exams. On Wednesday, she has 48 - 36 = 12 exams left to grade.
So the answer is 12.


Question: Abie had 20 bags of chips. She gave 4 bags to her friend and bought another 6 bags of chips in the store. How many bags of chips does Abie have in the end?
Answer with step-by-step thinking: Abie had 20 - 4 = 16 bags of chips after giving 4 bags of chips to her friend. Abie has 16 + 6 = 22 bags of chips in the end.
So the answer is 22.


Question: Madison makes 30 paper boats and sets them afloat. 20% are eaten by fish and Madison shoots two of the others with flaming arrows. How many boats are left?
Answer with step-by-step thinking:
First find the number of boats eaten by fish: 30 boats * 20% = 6 boats. Then subtract the two groups of boats that were destroyed from the original number to find the number left: 30 boats - 6 boats - 2 boats = 22 boats.
So the answer is 22.