Matthew, Rohan, and Daniel are part of a school band. They have a goal to practice their instruments for 150 minutes today.

Matthew is practicing the song Jingle Bells on his piano, which is three minutes long. Then Rohan practices Joy to the World on his guitar, which is two minutes.

Then Daniel practices his chords on his violin for fifteen minutes.

How many more minutes do they need to practice to complete their goal?

Mrs.Cool had 22 chairs in her classroom. She needed 24 chairs for a parent-teacher meeting. Ethan, Benjamin, and 3 other students transferred to another school because their families were moving. Then 2 months later, Luna and 3 more students joined the class. How many chairs does Mrs.Cool need now for the meeting?

Hannah and her friends Avery and James have set a goal to read 15 books for their book club in 1 week. It is Monday and together they have read 6 books so far. How many more books does the group need to read now?

Miss Lightfoot, Michael, Nora, and Jackson are part of a reading club. They read for different durations on different days:

Monday - Miss Lightfoot and Michael read for 14 minutes

Tuesday - Nora joined them and they read for 30 minutes

Wednesday - Only Jackson read and he read for 10 minutes

How many more minutes did they read on Monday and Tuesday than Wednesday?

Lela had 567 books in her library and Bryce had 236 books in his collection. How many more books does Lela have than Bryce?

Avery, David, and Jackson are saving money for a school project. Avery saved $345, David saved $678, and Jackson saved $901. How much money did they save in total?

On Monday, Jackson helped Mr. Miller deliver 178 batteries to a local electronics store. The next day, Avery and Ava joined them and they delivered 789 batteries.

How many batteries did Mr. Miller and the students deliver in all?

Anika is helping Bob count the animals on his farm. She counts 9 eggs from the chickens. Bob tells her that he has 12 times as many cows as he has eggs, and he has 10 times as many sheep as cows. How many more sheep than cows does Bob have on his farm?