Addition (Three digits)：練習問題

A library received two boxes of new books. Box A contained 345 books and Box B contained 427 books. What is the total number of new books the library received?

Which of the following expressions has the largest sum?

A library has three floors of books. The first floor has \(358\) books, and the second floor has \(279\) books. The third floor has \(64\) more books than the second floor. What is the total number of books in the library?

Calculate the sum of the following three numbers:
\(142 + 253 + 304 = ?\)

A toy factory produced \(428\) blue cars and \(375\) red cars. If they want to reach a total of \(950\) cars, how many more cars do they need to produce?

A bakery sells \( 486 \) cupcakes in the morning and \( 327 \) cupcakes in the afternoon. What is the total number of cupcakes sold during the day?

A fruit shop sold \( 348 \) apples in the morning and \( 475 \) apples in the afternoon. How many apples were sold in total?

In a school hall, there are \(485\) red chairs and some blue chairs. If there are \(138\) fewer blue chairs than red chairs, how many chairs are there in total?

A toy store has 245 teddy bears, 378 doll sets, and 156 toy cars.

a) What is the total number of items in the store?

b) If the store receives a new shipment of 120 teddy bears, how many teddy bears will the store have in total?

Consider the addition of two three-digit numbers: \( 4A6 + 27B = 711 \).
a) Find the digits represented by A and B.
b) If you subtract 150 from the sum (711), what is the result?
c) Is the result from part (b) an odd or even number?