1. Knowing Our Numbers Worksheet With Answers Page 24
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25Fill in the Blanks
1. A single digit or group of digits denoting a number is called a _____________.
2. The face value of digit 3 in the number 3,284 is _____________.
3. The place value of digit 7 in the number 6,721 is _____________.
4. In Roman numerals, X can be subtracted from _____________ and _____________ only.
5. The estimate of the number 764 when rounded off to nearest hundreds is _____________.
6. A number greater than or equal to 500 and less than 1500 on rounding off to nearest thousands
gives _____________.
Answer Orally
1. Which digit in the number 1,234 has the highest face value?
2. Which digit in the number 1,234 has the highest place value?
3. How many kilograms are there in 1 quintal?
4. How many centimetres are there in 1 km?
5. What is Hindu-Arabic numeral system?
6. How many distinct symbols (numerals) are there in the Roman numeral system?
7. Which symbol is used to represent 10,000 in the Roman numeral?
8. What number is obtained on rounding off 6,292 to the nearest hundreds?
9. What is a palindromic number?
L
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VALUATE
1. Write the numerals for each of the following:
(a) Sixteen crore forty lakh ten thousand two hundred forty-nine
(b) Seven crore two lakh eighty-seven
2. Write number names for (a) 7,23,56,708
(b) 27,57,002
3. Write each in expanded form: (a) 5,35,23,981
(b) 34,49,28,876
4. Find the difference between the place values of two 7s in 78,65,49,756.
5. How many five-digit numbers are there in all?
6. Arrange the following numbers in ascending as well as descending order:
4,75,63,892; 56,45,389; 3,27,896; 5,64,585 and 45,87,692.
7. The population of a city in the year 2002 was 2,45,67,890. In the year 2007, population rose
to 2,45,69,923. What was the increase in population?
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8. The construction cost of 18 duplex houses constructed by a builder is
4,56,24,564. What is
the cost of one such duplex house?
9. A student multiplied 7,236 by 75 instead of multiplying by 57. By how much was his answer
greater than the correct answer?
10. A vessel has 5 L, 500 mL of ice cream. How many ice cream cups, each of 50 mL capacity, can
be filled?
11. Express each of the following as a Hindu-Arabic numeral:
(a) XXXII
(b) XCV
(c) DCCLXIV
(d) CCXX
(e) MVI
(f) LXXXIV
12. Estimate and compare with the actual sum: (a) 760 + 683
(b) 9,864 + 2,349
13. Estimate the product of 367 × 540 by rounding off each number to its nearest hundreds.
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