WORKSHEET 1

1. Select the correct answer.

(a) Which of the following is the number name of the smallest 7-digit number?
(i) Ten thousand (ii) Ten lakh (iii) Ten million (iv) One lakh
(b) Which of the following numbers represents ‘Forty-three crore eighty-five lakh
forty-six thousand two hundred thirteen’?
(i) 43,85,46,231 (ii) 43,85,46,312 (iii) 43,85,64,231 (iv) 43,85,46,213
(c) Which periods from the extreme right are the same in both the Indian and
International Number Systems?
(i) First 3 places (ii) First 4 places
(iii) First 2 places (iv) They are all different
(d) Which of the following represents 10 crores in the International number system?
(i) 1 million (ii) 10 million (iii) 100 million (iv) None of these
(e) What is the place value of 2 in 62,13,15,754?
(i) 2 lakhs (ii) 2 crores (iii) 20 crores (iv) 20 lakhs
2. Separate the given numbers into periods as per the Indian Number system by putting
commas and also write their number names.
(a) 40635612 (b) 132506604 (c) 91645007
3. Write the smallest 8-digit number and the largest 7-digit number.
4. Fill in the blanks.
(a) 10 million = ________ lakhs (b) 2 million = ________ lakhs
(c) 250 million = __________ crores (d) 20 crores = _________ million
5. Write the predecessor and successor of the given numbers.
(a) 8,14,99,999 (b) 3,21,46,794 (c) 78,43,14,621
6. Write the following numbers in expanded form.
(a) 24,09,48,572 (b) 6,23,40,817 (c) 15,43,540
7. Compare the following pairs of numbers. Put the correct sign <, > or =.
(a) 26,76,264 26,67,246 (b) 1,08,23,209 99,00,299
(c) 22,33,46,786 23,33,46,786 (d) 99,999 9,49,099
8. Arrange the following numbers in ascending and descending orders.
(a) 48,76,042; 48,87,549; 48,78,432
(b) 1,03,14,620; 1,03,13,635; 1,03,14,627
9. Round off 4,52,24,331 to the nearest 10, 100 and 1,000.
10. Rewrite this news headline by rounding off the number to the nearest 1,000.
‘The Delhi government is close to its target of planting 15,84,342 trees’.
 WORKSHEET 2

1. Select the correct answer.

(a) MM is equal to:
(i) 200 (ii) 2,000 (iii) 100 (iv) 1,000
(b) In Roman numerals, 51 is written as:
(i) VI (ii) IL (iii) LI (iv) XXXXXI
(c) What is the value of CXI in Hindu-Arabic numeral system?
(i) 110 (ii) 101 (iii) 91 (iv) 111
B
(d) What is the value of C?
(i) 10,000 (ii) 1,000 (iii) 1,00,000 (iv) 100
(e) How is 429 written in Roman numerals?
(i) CCCCXXIX (ii) CDXXVIV (iii) CDXXIX (iv) DCXXIX
(f ) What is the value of M?
(i) 10,000 (ii) 1,000 (iii) 1,00,000 (iv) 10,00,000
2. Fill in the blanks.
(a) The Roman numeral system does not have a symbol to represent _________.
(b) The number 1,000 is written in the Roman numeral system as _________.
(c) A Roman number can be repeated only _________ in a row.
(d) Roman number I can be subtracted only from _________ and _________.
(e) Roman number _________ can be subtracted only from L and C.
3. Write the following numerals in the Hindu-Arabic numeral system.
(a) XVI (b) XLVI (c) CDXL (d) CCXCI (e) DLXII
(f ) XXXIV (g) DCCIV (h) DCCCII (i) CMXIX (j) MCC
4. Write the following numerals in the Roman numeral system.
(a) 248 (b) 95 (c) 305 (d) 891 (e) 226
(f ) 55 (g) 361 (h) 71 (i) 380 (j) 74
5. Find the value of the following and write the answers using Roman numerals.
(a) XCIV – XC (b) CLXV + CII (c) CCXCIV – CCXLI
(d) DIV + CCC (e) DCCCXCIX – DC (f ) M – CMX
6. Solve the following and write the answers using Roman numerals.
(a) 38 + 40 (b) 7 × 30 (c) 62 × 4 (d) 56 + 30
(e) 4 × 12 (f ) 50 × 2 (g) 25 × 5 (h) 500 × 4
7. Which of the following are not written as per the rules.
(a) VVI (b) XLL (c) XL (d) ICC (e) CM
(f ) XDC (g) CDL (h) XLVI (i) XM (j) XII
 WORKSHEET 3

1. Add the following numbers.

(a) 21,264 and 48,192 (b) 6,21,04,637 and 56,15,168
(c) 50,43,09,186 and 65,048 (d) 6,54,79,306; 34,25,815 and 7,67,999
2. Subtract the following numbers and check your answer.
(a) 31,487 from 23,15,549 (b) 7,43,38,640 from 14,05,19,656
(c) 14,46,785 from 44,31,443 (d) 62,40,658 from 88,56,076
3. Find the missing digits.
(a) TL L TTh Th H T O (b) C TL L TTh Th H T O
5 ? 6 ? 8 ? 3 ? 4 5 0 ? 4 0 ?
+ 2 9 3 0 ? 3 3 + 5 3 ? 9 3 ? 7 8
8 0 ? 7 4 7 ? 8 7 6 0 1 4 ? 0

(c) C TL L TTh Th H T O (d) L TTh Th H T O

? 3 1 8 ? 9 4 2 ? 4 3 ? 7 ?
– 2 1 ? 5 4 0 ? 9 – 5 6 ? 4 5 6
2 ? 6 ? 3 ? 7 ? 2 ? 8 5 ? 6

4. Solve the following and write the number name for the sum or difference obtained.
(a) Five lakh thirty-eight thousand seven hundred fifteen plus twenty lakh thirty-five
thousand six hundred twenty-four
(b) Three crore twenty-three lakh ten thousand seven hundred forty plus sixty-four
lakh
(c) Two lakh thirty thousand five hundred ninety-seven minus one lakh twenty
thousand three hundred fifty-two
(d) Seventy-seven lakh sixteen thousand four hundred thirty minus thirty-eight lakh
fifty-two thousand one hundred twenty-six
5. Estimate the sum by rounding off each number to the nearest 100. Also, check whether
the sum obtained is close to the actual sum or not.
(a) 46,316 + 3,17,956 (b) 4,21,832 + 5,36,122
6. Estimate the difference by rounding off each number to the nearest 1,000. Also, check
whether the estimated difference is correct or not.
(a) 3,53,865 – 1,00,420 (b) 49,43,660 – 44,64,650
7. Annu, Sheetal and Vinod saved ` 15,385; ` 10,897 and ` 13,494 respectively. Find the
total amount saved by them?
8. There are 1,64,330 people in city A and 3,22,456 people in city B. How many more
people are in city B than city A?
 WORKSHEET 4

1. Multiply the given numbers.

(a) 1,263 × 56 (b) 3,416 × 421 (c) 5,203 × 705 (d) 9,806 × 2,901
2. Find the product.
(a) 5,935 × 10 (b) 3,641 × 100 (c) 32,522 × 900 (d) 1,114 × 3,000
3. Multiply using lattice multiplication method and verify the result by simple
multiplication.
(a) 3,120 × 48 (b) 4,031 × 99 (c) 9,212 × 636 (d) 2,956 × 32
4. Multiply using expanded form and check your answer by actual multiplication.
(a) 2,409 × 62 (b) 1,786 × 131 (c) 1,089 × 1,276
5. Estimate the following products by rounding off each number to the nearest 10.
(a) 3,582 × 27 (b) 6,517 × 141 (c) 5,297 × 1,031 (d) 1,010 × 561
6. Divide using long division method.
(a) 675 ÷ 15 (b) 456 ÷ 24 (c) 448 ÷ 16 (d) 1,566 ÷ 29
7. Divide the following mentally and fill in the blanks.
(a) 2,062 ÷ 10 Quotient = ______ Remainder = ______
(b) 338 ÷ 10 Quotient = ______ Remainder = ______
(c) 7,096 ÷ 100 Quotient = ______ Remainder = ______
(d) 7,379 ÷ 1,000 Quotient = ______ Remainder = ______
8. Solve the following.
(a) 6 × 4 + 2 – 8 (b) 150 ÷ 5 + 4 × 8 (c) 124 ÷ 4 + 8 × 14 – 6
9. Divide using the cancellation method.
(a) 350 y 70 (b) 3,050 y 50 (c) 4,900 y 700
(d) 44,000 y 2,000 (e) 66,000 y 500 (f ) 2,400 y1,200
10. Solve the following word problems.
(a) There are 100 shirts. If each shirt has 256 stripes on it, how many stripes are there
in all on all the shirts?
(b) A bangle shop ordered 82 boxes of bangles. There were 1,200 bangles in each
box. How many bangles did the bangle shop order?
(c) A travel agency sold 12 tickets for a trip from Mumbai to Goa for ` 44,928. For
how much money did the travel agency sold one ticket?
(d) The product of two numbers is 8,040. If one of the numbers is 670, find the
other number.
(e) A press can print 3,000 newspapers in 15 days. How many newspapers can it print
in 45 days?