Page 27 - Revised Maths Wisdom Class - 3

4-Digit Numbers 25

Example 3: Form the greatest 4-digit number using the digits 5, 4, 2, 7.

Solution: Arranging the digits in descending order, we get:

7 > 5 > 4 > 2

Thus, the greatest 4-digit number using the digits is 7542.

Exercise 2C

1 Write the place value and face value of 8 in 3869.
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2 Write the place value and face value of 0 in 9012.

3 Write the place value of the digits given below.

(a) 6 7 8 (b) 4 0 9 (c) 7 7 7

4 Write each of the following numbers in expanded form.

(a) 2098 (b) 3189 (c) 9715 (d) 9876 (e) 7432

5 Write the following in short form.

(a) 6000 + 800 + 30 + 4 (b) 4000 + 90 + 1 (c) 8000 + 500 + 30 + 4

(d) 1000 + 800 + 9 (e) 5000 + 600 + 70 + 3

6 Fill in the blanks using >, < or =.

(a) 1525 _______ 2510 (b) 3515 _______ 5315 (c) 3815 _______ 3518

(d) 4637 _______ 4763 (e) 2145 _______ 2415 (f) 5001 _______ 5001

7 Arrange the following numbers in ascending order.

(a) 4273, 3583, 4219, 7518 (b) 3625, 4368, 1458, 1225

(c) 4210, 2509, 3678, 6250

8 Arrange the following numbers in descending order.

(a) 6215, 7013, 2158, 4216 (b) 4329, 3576, 2518, 5250

(c) 3259, 2852, 5719, 6053