Mathematics Olympiad MCQ Worksheet for Class 4

Q1) The sum of 2 decimals is 5.8. The difference of the 2 decimals is 1.2. What is the value of the smaller decimal?

1. 2.3

2. 3.5

3. 4.6

4. 5.0

Explanation: The smaller decimal is 2.3, as 5.8 - 3.5 = 2.3, and 2.3 + 3.5 = 5.8.

Q2) Which of the following are common factors of 36 and 54?

1. 1, 2, 3, 4, 6, 18

2. 1, 2, 3, 4, 6, 9

3. 1, 2, 3, 6, 9, 12

4. 1, 2, 3, 6, 9, 18

Explanation: The common factors of 36 and 54 are 1, 2, 3, 6, 9, and 18.

Q3) Express 10 ones 415 hundredths as a decimal.

1. 4.15

2. 10.415

3. 14.15

4. 104.15

Explanation: The decimal representation is 10.415.

Q4) Arrange the following decimals from the smallest to the greatest.

1. 0.14, 0.41, 1.04, 1.4

2. 0.41, 0.14, 1.04, 1.4

3. 0.14, 1.4, 1.04, 0.41

4. 0.41, 0.14, 1.4, 1.04

Explanation: The arranged decimals are 0.14, 0.41, 1.04, 1.4 from smallest to greatest.

Q5) In which of the following numbers does the digit 3 stand for 3 tenths?

1. 356.39

2. 763.87

3. 935.16

4. 975.93

Explanation: In the number 356.39, the digit 3 stands for 3 tenths.

Q6) Which of the following decimals is the greatest?

1. 0.043

2. 0.135

3. 0.410

4. 0.404

Explanation: The greatest decimal is 0.410.

Q7) 66 thousands and 3 tens is the same as ____________.

1. 663

2. 6630

3. 66 003

4. 66 030

Explanation: 66,030 is the same as 66 thousands and 3 tens.

Q8) 41 tenths and 15 hundredths is the same as __________.

1. 0.425

2. 0.560

3. 4.115

4. 4.250

Explanation: 41 tenths and 15 hundredths is the same as 4.250.

Q9) When rounded off to the nearest hundred, there are 7600 cans of food collected during a food donation drive. What is the greatest possible number of cans collected?

1. 7 649

2. 7 651

3. 7 749

4. 7 751

Explanation: The greatest possible number of cans collected is 7,651.

Q10) Ninety-three thousand and fifty-seven in figures is _______.

1. 93 570

2. 93 507

3. 93 057

4. 9357