Knowing Our Numbers Worksheet With Answers Page 6
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7Learning mathematics–Vi
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3. Insert commas suitably and write each of the following numbers in words in the Indian
system and the International system of numeration:
(i) 506723
(ii) 180018018
4. Write the following numbers in expanded form:
(i) 750687
(ii) 5032109
5. Write the following numbers in figures:
(i) Seven lakh three thousand four hundred twenty
(ii) Eighty crore twenty three thousand ninety three
Also write the above numbers in the place value chart.
6. Write each of the following numbers in numeral form and place commas correctly:
(i) Seventy three lakh seventy thousand four hundred seven.
(ii) Nine crore five lakh forty one.
(iii) Fifty eight million four hundred twenty three thousand two hundred two.
7. Write the face value and place value of the digit 6 in the number 756032.
8. Write the face value and the place value of each of the underlined digit in the numeral
3 2 5 7 4 0 1.
9. Find the difference between the place value and the face value of the digit 9 in the number
229301.
10. Determine the difference of the place value of two 7’s in 37014472 and write it in words
in International system.
11. Determine the product of place value and the face value of the digit 4 in the number
5437.
12. Find the difference between the number 895 and that obtained on reversing its digits.
comparison of numbers
To compare two natural numbers, we adopt the following procedure:
Step 1.
If the number of digits in the given numbers is unequal, then the number having more
digits is greater.
Step 2.
If the number of digits in the given numbers is equal, then compare the digits at the highest
place, the number having greater digit (at the highest place) is greater. If the digits at the highest
place are equal, then compare the digits at the next highest place, the number having greater digit
(at the next highest place) will be greater, and so on.
For example:
(i) Consider the numbers 53757 and 400381.
The number of digits in 53757 = 5,
the number of digits in 400381 = 6.
∴ 400381 > 53757.
(ii) Consider the numbers 46301 and 49012.
6
4
3
0
1
The number of digits in 46301 = 5,
the number of digits in 49012 = 5.
4
0
1
2
9
∴ Both the numbers have equal digits.
The digit in the highest place in 46301 = 4,
the digit in the highest place in 49012 = 4.
∴ Both numbers have same digit at the highest place.
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