# Grade 4 Mathematics Practice Questions on Computation Operations

This contains a few computation operation questions for 4th-grade mathematics. Answers with explanations are available in our premium "Buy Courses" section, featuring 500+ tests covering the entire Class 4 Maths syllabus with chapter-wise and mock tests.

Q1) Weili had some fish at first.

Her brother then gave her the same number of fish as the number of fish she had. She put all of them equally into 9 bowls. Each bowl contained 12 fish. How many fish did she have at first?

Ans: _____________

She had 54 fish at first.

Q2) Weiling attended a piano recital. In the auditorium, she was led to the fourth row from the stage. There were 5 seats to the right of Weiling and 8 seats to her left. Each row had an equal number of seats. If there were 18 rows behind her, how many seats were there in the auditorium?

Ans: _______________

There were 308 seats in the auditorium.

Q3) A basket contained 224 red, blue and green bean bags. There were 3 times as many blue bean bags as red bean bags. There were 16 fewer green bean bags than red bean bags. How many red bean bags were there in the basket?

Ans: _______________

There were 52 red bean bags.

Q4)  In City A, there are a total of 56 cinemas, 22 of the cinemas are newly-built while the rest are not. An old cinema has 298 fewer seats than a new cinema. A new cinema has 872 seats. What is the total number of seats in these 56 cinemas?

Ans: _____________________

There was a total of 38 700 seats in these 56 cinemas.

Q5) Mr Chen celebrates his birthday today.12 years ago, he was thrice as old as his daughter, and his wife was 24 years older than her daughter. If his wife is 51 years old this year, how old was Mr Chen last year?

Ans: _____________

Mr Chen was 56 years old last year.

Q6) There are 450 and 210 sweets in boxes A and B respectively. How many sweets must be transferred from box A to box B so that the number of sweets in box B is 5 times the number of sweets in box A?

Ans:____________

340 sweets must be transferred from box A to box B.

Q7) Kumar had twice as many stickers as Mina. After Mina gave away 78 stickers, Kumar had 6 times as many stickers as Mina. How many stickers did both of them have at first?

Ans:____________

They had 351 stickers at first.

Q8) Aaron goes to the library once every 3 days while Dorothy goes to the library once every 4 days. If the 2 children met at the library on Tuesday, when will be the next time they meet each other at the library again?

Ans:____________

Sunday

Q9) There is a total of 245 marbles in boxes A and B and a total of 623 marbles in boxes B and C. There are 4 times as many marbles in box C than A.

How many marbles are there in box B?

Ans:____________

There are 119 marbles in box B.

Q10) Thomas had some marbles. He gave 296 marbles to James and lost 18 of them. He had 136 marbles left, how many marbles did he have at first?

Ans: ____________________

450 marbles

Q11) There were 350 pupils in school A and 1186 pupils in school B at first. When an equal number of pupils were admitted into each school, the number of pupils in school B was thrice that of school A. How many pupils were in school B in the end?

Ans:____________

There were 1254 pupils in school B in the end.

Q12) Daniel had thrice as many cards as Ken. After Daniel gave away 120 cards, Ken had thrice as many cards as Daniel. How many cards did Daniel have in the end?

Ans:____________cards

15

Q13) Raymond and Jessica have a total of 748 stickers. Sarah and Jessica have a total of 935 stickers while Raymond and Sarah have a total of 1177 stickers. Frances had 15 stickers fewer than Raymond. How many stickers does Frances have?

Ans:____________

Frances have 480 stickers.

Q14) At the 'Disney On Ice' show, there were twice as many women as men. The number of children was two times the total number of men and women. If the total number of spectators was 5 400, find the number of children who were at the show?

Ans: _________________

3600

Q15) Jeremy has 541 stamps. Kelvin has 55 stamps less than Jeremy but has thrice as many stamps as Leo. How many more stamps do Kelvin and Leo have altogether than Jeremy?

Ans: _________________

107

Q16) There are 396 people at a family day carnival. How many children are there if every family has only 2 adults and 1 child?

Ans: _____________

132

Q17) There were 50 more carrot cakes than yam cakes on sale in a cafe. After selling three times as many carrot cakes as yam cakes, there were 14 more yam cakes than carrot cakes left. How many carrot cakes did the cafe sell?

Ans: _________________

96

Q18) The number of flowers that Mrs Vanthi has is between 80 to 100. The flowers can be bundled into bouquets of 5 or 9 with no flowers left over.
How many flowers does she have?

Ans: _______________

90

Q19) Keng Seng needs to collect 419 seashells for an art project. He only has 231 seashells now. He only had 4 weeks to collect the rest of the seashells and he collects an equal number of seashells each week. How many seashells must he collect each week?

Ans: ______________

50

Q20) There are 1572 apples in Bag A and Bag B. The number of apples in Bag A is 12​   the number of apples in Bag B. There are 150 more apples in Bag C than in Bag A. How many apples are there in Bag C?

Ans: _____________ apples