Number System (Exercise 1)

EXERCISE 1.1

1. Write each of the following in numeral form:

                             i.          Seven thousand twelve.

                             ii.          Seventy thousand Sixty-three.

                            iii.          Nine lakh seven thousand four hundred six.

                             iv.          Six lakh nine thousand nine.

                              v.          Thirty lakh twelve thousand one.

                              vi.          Eight crore five lakh twenty-five.

                            vii.          Three crore three lakh three thousand three hundred three.

            viii.          Twenty-three crore sixty lakh thirty thousand fifty-seven.

 

2. Write the following numbers in words in the Indian system of numeration:

(i) 42,009     (ii) 7,05,045 (iii) 35,42,034          (iv) 7,56,04,014

(v) 5,05,05,500 (vi) 8,50,80,050 (vii) 6,03,04,012

 

3. Insert commas in the correct positions to separate periods and write the following number in words:

(i) 4355          (ii) 24708                  (iii) 850367               (iv) 2050784

(v) 10108607           (vi) 10005007                      (vii) 910157104

 

4. Write each of the following in expanded notation:

(i) 30057       (ii) 12045      (iii) 10005     (iv) 230060

 

5. Write the corresponding numeral for each of the following:

      1.    7x 10000+2 x 1000 + 5 x 100 +8 x 10 +8 x 1

      2.    4 x 100000 +8 x 1000 + 1 x 100+7 x 1

      3.    8 x 1000000 + 3 x 1000 + 5 x 1

      4.    5 x 10000000 + 7 x 1000000 + 3 x 1000 + 9 x 10 + 4

 

6. Find the place value of the digit 4 in each of the following:

(i) 74773160            (ii) 8745996

 

7. Determine the product of the place values of three fives in 450558.

 

8. Determine the difference of the place values of two 7’s in 287839705.

 

9. Determine the difference between the place value and the face value of 5 in 7865481.

 

10. Which digits have the same face value and place value in 92070034?

11. How many different 3-digit numbers can be formed by using the digits 0, 6, 5 without repeating any digit in the number?

 

12. Write all possible 3-digit numbers using the digits 6, 0, 8, when

(i) repetition of digits is not allowed      (ii) repetition of digits is allowed

 

13. Fill in the blank:

     1.    1 lakh = ………………………. ten thousand

     2.    1 lakh = ………………………. thousand

     3.    1 lakh = ………………………. hundred

     4.    1 lakh = ………………………. ten

     5.    1 crore = ………………………. ten lakh

     6.    1 crore ………………………. lakh

     7.    1 crore = ………………………. ten thousand

     8.    1 crore = ………………………. thousand

     9.    1 crore = ………………………. hundred

    10.  1 crore = ………………………. ten

 

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