Question: Colton had 72 dolphin stickers. He gave 4 stickers each to 3 friends. He also gave his friend Mandy 2 more than he gave his three friends total.  And he gave Justin 10 less than Mandy. How many stickers does Colton have left?
Answer with step-by-step thinking: Colton gave away 4 stickers * 3 friends = 12 stickers. Colton gave Mandy 2 + 12 stickers = 14 stickers. Colton gave Justin 14 stickers - 10 = 4 stickers. In total, Colton gave away 12 + 14 + 4 stickers = 30 stickers. Colton's number of total stickers at the end is 72 - 30 = 42 stickers.
So the answer is 42.


Question: Last year Dallas was 3 times the age of his sister Darcy. Darcy is twice as old as Dexter who is 8 right now. How old is Dallas now?
Answer with step-by-step thinking: Darcy = 2 * Dexter = 2 * 8 = 16. Last year Darcy was 16 - 1 = 15. Dallas was 3 times Darcy last year = 3 * 15 = 45. Dallas is a year older now = 45 + 1 = 46. Dallas is 46 years old now.
So the answer is 46.


Question: Ernest bought 50 meters of wire and cut it into 5 equal parts. He then used 3 parts of the wire. How many meters of wire is not used?
Answer with step-by-step thinking:
Each part of the wire is 50 / 5 = 10 meters long. Ernest used 3 parts, then he used 10 x 3 = 30 meters of the wire. Therefore, 50 - 30 = 20 meters of wire is not used.
So the answer is 20.