Addition and Subtraction：练习题

Calculate the result of:
\(456,782 + 123,418\)

A fruit shop had 3,500 apples. It sold 1,245 apples in the morning and 890 apples in the afternoon. How many apples are left?

The sum of three numbers is 1,000,000. The first number is 345,000. The second number is 12,500 less than the first number. What is the third number?

A library has 2,450 books. If 875 books are borrowed on Monday and 420 books are returned on Tuesday, how many books are in the library at the end of Tuesday?

A logistics company transported 248,500 parcels in June. In July, it transported 12,650 fewer parcels than in June. How many parcels did the company transport in total during these two months?

Calculate the result of:
\(58,204 + 13,796 - 4,500\)

Subtract 12,450 from the sum of 8,500 and 7,900.

A warehouse has 14,200 boxes of juice. On Monday, 3,560 boxes were delivered. On Tuesday, 4,890 boxes were sent out. On Wednesday, twice as many boxes as Tuesday's outgoing amount were sent out. How many boxes remain?

A manufacturing plant produced 345,670 light bulbs in January and 412,850 in February.
(a) What is the total number of light bulbs produced in the two months?
(b) Round the total production to the nearest thousand.
(c) If 12,435 bulbs from the February batch were found to be faulty, how many functional bulbs were produced in February?

A charity collected donations over four months as follows:
January: \$12,450
February: \$15,800
March: \$11,250
April: \$16,500
(a) What is the total amount collected over the four months?
(b) What is the average (mean) amount collected per month?
(c) If the goal was to collect an average of \$15,000 per month for the first five months, how much must be collected in May?