Word Problem: Addition and Subtraction - 2 | Mathematics for Class 4 PDF Download

Q1: Denver got 365 comments on his uploaded video. He reacted with a heart to 162 comments and replied to 74 other comments by “liking” them. How many comments did he reply to? How many comments did he not reply to?

Sol: Number of comments liked162 + 74 = 236
Denver replied to 236 comments.
365 – 236 = 129
Denver did not reply to 129 comments.

Q2: To earn money on a video website, Harry needs at least 1,000 subscribers and 4,000 watched hours on his channel account. Harry had 345 subscribers. He then uploaded his first adventure video and gained another 511 subscribers. How many more subscribers does he need to start earning money?

Sol: Total number of subscribers needed to earn money = 1000

Number of subscribers Harry has = 345 + 511 = 856 

Number of subscribers he neededs more = 1000 – 345 – 511 = 144
He needs 144 more subscribers to start earning money.

Q3: The table shows the number of cups of different sizes of various beverages sold in one week.

What was the total number of small-size beverages sold in a week?

Sol:

Total number of small size beverages sold = coffee + tea + fruit  juice + coke = 47 + 8 + 28 + 46 = 129
The total number of small size beverages sold was 129.

Q4: The table shows the number of cups of different sizes of various beverages sold in one week.

How many regular-size cups of fruit juice were sold?

Sol: 

56 + 15 + x + 68 = 186
139 + x =186
=> x = 47
47 regular-size cups of fruit juice were sold in a week.

Q5: The table shows the number of cups of different sizes of various beverages sold in one week.
What was the total number of cups sold in all? Which size of beverage had the highest number of sales?

Sol:

129 + 186 + 104 = 419
There were 419 cups of beverages sold in one week.
The regular size cup had the largest number of sales.

Q6: There are 1,354 animals in one barn. There are 574 goats, 346 cows, and the rest are horses. If 89 horses were sold, how many horses are left in that barn?

Sol: Total number of animals ina barn = 1354

Number of goats = 574 

Number of cows = 346

Total number of animals except for horses = 574 + 346 = 920

Therefore, number of horses= 1354  - 920 = 434
There were 434 horses left in that barn.

Q7: Mr. Smith has 238 eggs in the warehouse. He collected another 122 eggs from his chickens yesterday. As he arranged all the eggs in trays, he accidentally dropped 28 eggs on the ground. How many unbroken eggs were left? Among the eggs left were 126 brown eggs; how many were white eggs?

Sol: Total number of eggs in Mr. Smith's warehouse = 238

Total number of eggs he collected from his chickens = 122

Total number of eggs Mr. Smith has = 238 + 122 = 360

Number of eggs he dropped = 28
Number of eggs left = 360 - 28 = 332

There were 332 unbroken eggs left.
Number of brown eggs = 126

Therefore, number of white eggs = 332 – 126 = 206
There were 206 white eggs left.

Q8: There are 241 ducks on the farm. There are 120 fewer chickens than ducks. How many chickens are there? If some chickens are being held for customers, and 82 chickens are left, how many chickens are being held for customers?

Sol: Total number of ducks = 241

According to question, number of chickens = 241 – 120 = 121
There are 121 chickens on the farm.
Number of chickens left = 82

Number of chickens left for the customers =121 – 82 = 39
There are 39 chickens being held for customers.

Q9: There were 578 piglets and 234 adult pigs in the warehouse building yesterday. Today, 126 piglets were sold, and 46 piglets will be delivered to the market later. How many piglets will be left at the warehouse?

Sol: Number of piglets = 578

Number of adult pigs = 234

Number of pigs sold = 578 – 126 – 46 = 406
There will be 406 piglets left in the warehouse.

Q10: The warehouse has 53 sacks of feed and 1 pack of vitamins in stock. There are another 85 sacks of feed and 3 packs of vitamin coming tomorrow. The owner has used 63 sacks of feed for his pigs. How many sacks of feed will be left in the warehouse after tomorrow’s delivery?

Sol:  Total number of sacks of feed= 53 + 85 = 138

Number of sacks of feed used = 63

Number of sacks of feed left = 53 + 85 – 63 = 75
There would be 75 sacks of feed left.