The school library bought 526 new books in the last two years. 193 of those books were bought this year. How many new books did the library buy last year?
What is 333 books?
200
This is the operation when you take a small quantity away from a large quantity.
What is subtraction?
200
4,246 - 1,582
What is 2,664?
200
4,040 - 2770
What is 1270?
200
The computer help desk took 829 calls in the month of April. 210 of the calls were wrong numbers. How many calls were not wrong numbers?
What is 619 calls?
300
This is when you rename a number by changing the place value.
What is regrouping?
300
6,382 - 3,537
What is 2,845?
300
8,001 - 3,477
What is 4,524?
300
There are 769 people sunbathing on the beach. There are another 385 people swimming in the water. How many people are there altogether?
What is 1154 people?
400
This the is the name for opposite operations like addition and subtraction.
What is inverse operations?
400
943 - 866
What is 77?
400
9,008 - 7,593
What is 1,415?
400
Maria's coffee shop sold 475 cups of coffee on Monday and Tuesday combined. 256 of the cups were sold on Tuesday. How many cups did the shop sell on Monday alone?
What is 219 cups of coffee?
500
This is what you get when you don't find the exact answer to a problem but an answer that is close.
What is an estimate?
500
13,582 - 9,779
What is 3,803?
500
7,400 - 2,297
What is 5,103?
500
Tyler needs his farm to grow 1,063 watermelons this year. So far it has grown 477 watermelons. How many more does Tyler need to grow?