Computation Operations - Mathematics Olympiad Class 4

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) Ali has fewer than 100 marbles. When he divides the marbles equally into groups of 8 or 9, there will be a remainder of 2 marbles. How many marbles does Ali have?

Ans: ________ 

Answer: Ali has 74 marbles.

Q2) The sum of three numbers is 105. The first number is twice as much as the second number. The second number is twice as much as the third number. What is the biggest number?


Ans: ________
Answer

The biggest number is 60.

Q3) There is a total of 150 ducks and cows in a farm. If there are 314 legs altogether, how many ducks and how many cows are there?


Ans: ________

Answer

There were 7 cows and 143 ducks.

Q4)  🌰 x 🌰   = 36

🌰 x 😲 x 😲 = 96

Find the value of 🌰 x 😲 
 
Ans: ________

Q5) There were 1 200 chairs in the hall.
Mr Ang arranged them into 3 rows.
There were 605 more chairs in the first row than the second row.
​​​​​​​The number of chairs in the second row was thrice the number of chairs in the third row. How many chairs were there in the second and third row?




Ans: ________

Answer

There were 340 chairs in the second and third rows.

Q6) If 🍒  + ♥ + ♥ = 140
and 🍒 x 🍒 = 36
then ♥ + 🍒 =?

1. 67
2. 73
3. 79
4. 134

Answer

B.

Q7) Li Ping had 4 420 red beads and 1 836 blue beads. She mixed them together and packed them equally into 8 boxes. How many beads are there in each box?

1. 323
2. 657
3. 782
4. 6 256

Answer

C.

Q8) Cameron and Niki had a total of 136 guppies at first.
After Cameron had bought another 14 guppies and Niki had given away 40 of her guppies, both had the same number of guppies left.
How many guppies did Cameron have at first?

Ans: _________
Answer

Cameron had 41 guppies at first.

Q9)6 pupils are standing in a circle during a PE lesson. Each pupil is allowed to throw the ball to another pupil only once. What is the maximum number of throws that can be made?

1. 12
2. 13
3. 14
4. 15

Answer

D.

Q10) Muthu wanted to give some sweets to his friends. If he gave each friend 3 sweets, he would have 2 sweets left over. But if he gave each friend 4 sweets, he would need another 3 sweets. How many sweets did Muthu have?

1. 9
2. 11
3. 12
4. 17

Answer

D.