Question: Miss Davis gave 15 popsicle sticks to each of the 10 groups in her class. How many sticks does she have left if she had 170 popsicle sticks?
Answer with step-by-step thinking: Miss Davis gave a total of 15 x 10 = 150 popsicle sticks to the 10 groups in her class. So, she is left with 170 - 150 = 20 sticks.
So the answer is 20.


Question: Harry participates in the auction of a classic painting. The auction starts at $300, Harry is the first to bid, adding $200 to the starting value, a second bidder doubles the bid, and a third bidder adds three times Harry's bid. Finally, Harry bids $4,000. By how much did Harry's final bid exceed that of the third bidder?
Answer with step-by-step thinking: Adding Harry's $200 to the initial value, the bid is at 300 + 200 = $500. The second bidder doubles the previous value, reaching a value of 500 * 2 = $1000. The third bidder adds three times the value of Harry's, then adds 500 * 3 = $1500. Adding the $1500 to the value of the second bid, the bid is at 1500 + 1000 = $2500. With the final bid of $4000, Harry bids 4000 - 2500 = $1500 more than the third bidder.
So the answer is 1500.


Question: Mikaela was repainting her bathroom. She bought 16 containers of paint to cover the four equally-sized walls. At the last minute, she decided to put tile on one wall in the bathroom and paint flowers on the ceiling with one container of paint instead. How many containers of paint will she have left over?
Answer with step-by-step thinking:
Mikaela would use 16 / 4 = 4 containers of paint per wall. To paint 3 walls, she will use 3 * 4 = 12 containers. After using 1 container for the ceiling, she will have 16 - 12 - 1 = 3 containers of paint left over.
So the answer is 3.