Question: Sally bought 3 photograph frames, each costing her $3. She paid with a $20 bill. How much change did she get?
Answer with step-by-step thinking: She bought the frames for 3 × $3 = $9. Sally got $20 - $9 = $11 in change.
So the answer is 11.


Question: Charles bought 20 papers to draw. Today Charles drew 6 pictures. Yesterday he drew 6 pictures before going to work and some pictures when he came back. How many pictures did Charles draw when he came back from work knowing that he has 2 papers left?
Answer with step-by-step thinking: Charles drew 6 + 6 = 12 pictures. He has 20 - 12 = 8 papers left. So Charles drew when he came back from work 8 - 2 = 6 pictures.
So the answer is 6.


Question: A gecko eats 70 crickets every three days. The first day she eats 30% of the crickets. The second day she eats 6 less than the first, and the third day she finishes up the remaining crickets. How many crickets does she eat on the third day?
Answer with step-by-step thinking:
Day 1:70(.30) = 21 crickets. Day 2:21 - 6 = 15 crickets. Day 3:70 - 21 - 15 = 34 crickets.
So the answer is 34.