### Number System - Worksheets

CBSE Worksheet-01

Class - IV Mathematics – Number System

Time Allowed: 30 minutes

1. Fill in the blanks with suitable words:
1. The predecessor of a number is _____ less than the given number.
2. 10276, 12276, 14276, ________, ________.
3. Greatest 6 digit number with 7 in the hundreds place is ________.
4. The predecessor of 3420200 is ________.
5. If the digits in the tens and thousands place in the number 100897 get interchanged, the new number will be ________
2. State whether each of the following statement is True or False:
1. The numbers 54879, 57822, 56798, 57869 are written in ascending order.
2. The successor of 4123587 is 4123858
3. VV is equal to 10
4. The place name of the digit 6 in the number 82,697,310 is Lakh.
5. The sum of the place values of the digits in the number 8721433 is 8721433.
3. The difference between the place value and the face value of the digit 5 in 49526
1. 500
2. 5
3. 495
4. 505
4. Write the number-name in the international system 1400317.
1. Fourteen lakh thousand three hundred seventeen.
2. One million four hundred thousand three hundred seventeen.
3. Fourteen lakh three thousand seventeen.
4. One million forty thousand three hundred seventeen.
5. Write the numbers in standard expanded form. 845,023.
1. 800000+45000+23
2. 800000+40000+5000+000+23
3. 800000+40000+5000+23
4. 800000+40000+5000+000+20+3
6. Write the integers from least to greatest. 7, -14, -7, 14, 0
1. 0, -7, -14, 7, 14
2. 0, 7, -7, 14, -14
3. -14, -7, 0, 7, 14
4. 0, -7, 7, -14, 14
7. One Lakh is a _____ digit Number.
1. 6
2. 7
3. 5
4. 8
8.  MLXXIV 759 DCCLIX 1204 XCVII 974 MCCIV 97
9. How many ten thousands and there in the number 765891?

10. Rewrite the numbers placing the commas according to the Indian System
46032795, 126798005, 26450093, 703567

11. Write the greatest and smallest 7 digit number using the digits:

1. 3, 7, 0, 9, 2,8 and 4
2. 4, 0, 5, 7, 3, 9 and 1
12. Write in the expanded form: 483293, 5095346, 734560

13. Round the number 7624689 to the

1. nearest 100
2. nearest 1000
3. nearest 10
4. nearest 100000
1. Write the face value, place name, and the place value of the underlined digit in the number. 298137
2. The number eight hundred and forty thousand three hundred and fifteen is reversed. What is the new number?
3. The digit in the ten-thousands place of 496357 is decreased by 4 and the digit at the tens place is increased by 4. Write a new number.
4. Write the smallest and largest 7 digit number using the digits 4,5,6,7,2,1,8.
14. Identify the measure of the skips and complete the pattern.

1. 2,361,500 < 2,461,500 < _____________ < ________________ < ________________
2. ___________ < 604,000 < 605,000 < _______________ <__________________
3. 1,71,008 > _____________ > ______________ > __________________ > 1,63,008
15. How many are:

1. Hundreds in 9675
2. Tens in 6235
3. Hundred in 672
4. Tens in 1372

CBSE Worksheet-01
Class - IV Mathematics – Number System

Solution

1. Fill in the blanks with suitable words:

1. The predecessor of a number is 1 less than the given number.

2. 16276, 18276

3. 999799
Greatest 6 digit number is 999999. But 7 is in hundreds place, so we need to replace the 9 in the hundreds with 7

4. 3420199, The predecessor of 3420200 = 3420200 - 1 = 3420199

5. 109807
Digit 9 in the tens place will go to thousands place and digit 0 in thousands place will go to the tens place.

2. State whether each of the following statement is True or False:

1. False
The numbers should be arranged from small to big in increasing/ascending order.

2. False,
The successor of a number is the number that comes just after it.
4123587 + 1 = 4123588

3. False. We write 10 as X in Roman numerals.

4. False, The number is in the International system. So the place name is Hundred thousand.

5. True
8000000 + 700000 + 20000  + 1000 + 400 + 30 + 3 = 8721433

3. (c) 495
Explanation: 500 (Place value) - 5 (Face value) = 495
4. (b) One million four hundred thousand three hundred seventeen.
Explanation: Values of the places in the International system of numeration are Ones, Tens, Hundreds, Thousands, Ten Thousand, Hundred thousand, Millions, Ten million, and so on.
1400317: One million four hundred thousand three hundred seventeen.
5. (d) 800000+40000+5000+000+20+3
Explanation: 800000+40000+5000+000+20+3  = 985583
6. (c) -14, -7, 0, 7, 14
Explanation: Every positive number is greater than all negative numbers.
‘0’ is greater than every negative number and less than every positive number.
Integers from least  to greatest: -14,-7, 0,7,14
7. (a) 6
Explanation: 100000 (1 Lakh) has 6 digits
8. a-3;  b-1;  c-4; d-2

9. 76 ten thousand means 76 x 10000 which is equal to 760,000

1. 46032795 = 4,60,32,795
2. 126798005 = 12,67,98,005
3. 26450093 = 2,64,50,093
4. 703567 = 7,03,567
1. 3, 7, 0, 9, 2,8 and 4
greatest 7 digit = 9874320
smallest 7 digit = 2034789
2. 4, 0, 5, 7, 3, 9 and 1
greatest 7 digit = 9754310
smallest 7 digit = 1034579
1. 483293 = 400000 + 80000 + 3000 + 200 + 90 + 3
2. 5095346 = 5000000 + 90000 + 5000 + 300 + 40 + 6
3. 734560 = 700000 + 30000 + 4000 + 500 + 60
1. 7624700
2. 7625000
3. 7624690
4. 7600000
1. Face value: 8 : Place Name:Thousands: Place value : 8 x 1000 = 8000
2. Given number: 840,315 : new number: 513,048
3. 456397
4. Smallest 7 digit  number: 1245678: Largest 7 digit number: 8765421
1. 2,361,500 < 2,461,500 < 2,561,500 < 2,661,500 < 2,761,500
2. 603,000 < 604,000 < 605,000 < 606,000 < 607,000
3. 1,71,008 > 1,69,008 > 1,67,008 > 1,65,008> 1,63,008
1. Hundreds in 9675
First we divide 9675 by 100 as shown below: we get, 96. So, there are 96 hundreds.
2. Tens in 6235
First, we divide 6235 by 10 as shown below: we get 623. So, there are 623 tens.
3. Hundred in 672
First, we divide 672 by 100 as shown below: we get, 6. So, there are 6 hundred.
4. Tens in 1372
First, we divide 1372 by 10 as shown below: we get 137. So, there are 137 tens.