Numbers — Chapter Test | Class 3 IMO

Q1

The place value of 6 in 6,342 is ______.

6 is in the Thousands place, so its place value is 6 × 1000 = 6,000.

Q2

Which number has 4 Thousands, 3 Hundreds, 0 Tens and 8 Ones?

4000 + 300 + 0 + 8 = 4,308.

Q3

What is the successor of 1,999?

Successor = number + 1 = 1,999 + 1 = 2,000.

Q4

Arrange in ascending order: 3,210 ; 3,201 ; 3,120.

Compare hundreds then tens: 3,120 < 3,201 < 3,210.

Q5

Which is the correct expanded form of 9,005?

9,005 has 0 hundreds and 0 tens, so 9000 + 0 + 5.

Q6

Skip counting by 3 starting from 6, what is the 4th number?

6 (1st), 9 (2nd), 12 (3rd), 15 (4th), so the 4th number is 15.

Q7

Rohan bought a toy for ₹2,345 and a book for ₹1,230. Which comparison is correct?

2,345 has 2 thousands while 1,230 has 1 thousand, so ₹2,345 > ₹1,230.

Q8

What is the predecessor of 3,500?

Predecessor = number − 1 = 3,500 − 1 = 3,499.

Q9

Using digits 4, 1, 0, 7 once each, what is the smallest 4-digit number?

Ascending digits are 0, 1, 4, 7; 0 cannot be first, so the smallest is 1,047.

Q10

Which of these numbers is an odd number?

An odd number ends in 1, 3, 5, 7 or 9. Only 5,281 ends in 1, so it is odd.

Q11

A school has 2,345 boys and 2,354 girls. Which statement is true?

Thousands and hundreds are equal; tens 4 < 5, so 2,345 < 2,354 — boys < girls.

Q12

Which of the following is an even number?

Even numbers end in 0, 2, 4, 6 or 8. 3,232 ends in 2, so it is even.

Q13

What is the largest number formed by the digits 8, 0, 3, 5?

Arrange in descending order: 8, 5, 3, 0 → 8,530.

Q14

Neha has ₹4,500 and her sister has ₹4,050. How much more does Neha have?

4,500 − 4,050 = 450, so Neha has ₹450 more.

Q15

Which of these is correct?

Thousands and hundreds are equal; tens 5 < 6, so 3,456 < 3,465.

Q16

What is the missing number in skip counting by 4: 12, ___, 20, 24 ?

12 + 4 = 16 and 16 + 4 = 20, so the missing number is 16.

Q17

A bus has seats numbered 1 to 50. Which of these seat numbers is odd and lies in the forties (4 in the Tens place)?

All are in the forties, but only 45 ends in an odd digit, so 45 is the odd one.

Q18

How many 4-digit numbers can be formed using the digits 2 and 3 only (repetition allowed)?

Each of the 4 places can be 2 or 3: 2 × 2 × 2 × 2 = 16 numbers.

Q19

The predecessor of the smallest 4-digit number is ______.

The smallest 4-digit number is 1,000, and its predecessor is 999.

Q20

Using digits 9, 2, 0, 1 once each, what is the difference between the largest and smallest 4-digit numbers?

Largest = 9,210 and smallest = 1,029 (0 cannot be first), so 9,210 − 1,029 = 8,181.