Problem Solving with 3- and 4-Digit Numbers
Addition and Subtraction, and more...

John is trying to keep track of the total number of ants in a colony. On the first day, he counted 988 ants. On the second day, he counted 899 ants. How many more ants did he count on the first day than on the second day?


Lisa loves to collect stamps. Amazingly, she has collected 290 stamps from Canada, 31 stamps from China, 212 stamps from America, and 15 stamps from France. How many stamps does Lisa have in total?


There were 1908 blueberries on a blueberry bush. After a bunch of birds came by and feasted on the blueberries for lunch, there were 1671 blueberries left. How many blueberries did the birds eat in total?


Maya bought a large bag of jellybeans. She discovered that there were 1201 green jellybeans, 800 red jellybeans, 615 yellow jellybeans, 1311 blue jellybeans, 621 orange jellybeans, and 500 purple jellybeans. How many jellybeans were there in total?


For a penny drive, a Grade 4 class collected a total of 9988 pennies. Jessica contributed 541 pennies; John gave 300, Emily gave 313, Sara gave 677, Rebecca gave 1088, Peter gave 698, and David gave 543. How many pennies did the rest of the class contribute?