Adding & subtracting 3 digit numbers

Front

What is the process of adding three-digit numbers called?

Back

Addition

Front

What is the process of subtracting three-digit numbers called?

Back

Subtraction

Front

If a room has a capacity of 500 seats and 323 are filled, how do you calculate the number of empty seats?

Back

Subtract the number of filled seats from the total capacity: 500 - 323 = 177.

Front

Mary sold 234 pencils on Monday and 150 more on Tuesday. How do you find the total number of pencils sold?

Back

Add the number of pencils sold on both days: 234 + (234 + 150) = 618.

Front

How do you find the total number of items when combining two quantities?

Back

Add the two quantities together.

Front

If Silas has 328 beads and Carson has 124 beads, how many beads do they have in total?

Back

328 + 124 = 452 beads.

Front

What is the formula to find out how many items are left after selling some?

Back

Subtract the number of items sold from the original number of items.

Front

If Mr. Mullinax has 462 baseball cards and sells 181, how many does he have left?

Back

462 - 181 = 281 baseball cards.

Front

What is the total number of students at Vandagriff Elementary if 948 students are enrolled and 521 attended a game?

Back

To find the number of students who did not attend, subtract those who attended from the total: 948 - 521 = 427 students.

Front

What is the importance of understanding place value when adding or subtracting three-digit numbers?

Back

Place value helps in aligning numbers correctly for addition or subtraction.