The DAV Class 5 Maths Book Solutions Pdf and **DAV Class 5 Maths Chapter 1 Brain Teasers** Solutions of Numbers up to 99,99,99,999 offer comprehensive answers to textbook questions.

## DAV Class 5 Maths Ch 1 Brain Teasers Solutions

Question 1.

Tick (✓) the correct answer.

(a) The place value of 6 in the number 265,431 is

(i) Thousand

(ii) Ten thousand

(iii) Sixty thousand

(iv) Six hundred thousand

Solution:

(iii) sixty thousand

(b) The difference between the place value of 2 and 4 in the number 12,34,576 is

(i) 2,00,000

(ii) 2,04,000

(iii) 4,000

(iv) 1,96,000

Solution:

(iv) 1,96,000

(c) The predecessor of 35,748,600 is

(i) 24,637,599

(ii) 35,748,500

(iii) 35,748,599

(iv) 35,748,601

Solution:

(iii) 35,748,599

(d) The digit at the ten million place in the number 735,896,545 is

(i) 7

(ii) 3

(iii) 5

(iv) 2

Solution:

(ii) 3

(e) 60 million = _______ Crores.

(i) 6 crores

(ii) 60 crores

(iii) 600 crores

(iv) 10 crores

Solution:

(i) 6 crores

Question 2.

Draw an Indian place value chart showing the periods and places of any 9-digit number.

Solution:

Question 3.

Draw an International place value chart showing the periods and places of any 9-digit number.

Solution:

Question 4.

Look carefully at the commas between periods and then write the number names for the following:

(a) 35,68,043

Solution:

Thirty five lakh sixty eight thousand forty three.

(b) 29,568,194

Solution:

Twenty nine million five hundred sixty eight thousand one hundred ninety four.

(c) 104,601,843

Solution:

One hundred four million six hundred one thousand eight hundred forty three.

(d) 28,00,16,493

Solution:

Twenty eight crore sixteen thousand four hundred ninety three.

(e) 3,084,001

Solution:

Three million eighty four thousand one.

(f) 9,001,348

Solution:

Nine million one thousand three hundred forty eight.

Question 5.

Fill in the blanks.

(a) 1 million = ____ lakhs.

Solution:

10

(b) 1 lakh = _____ thousands.

Solution:

100

(c) 1 crore = _____ millions.

Solution:

10

(d) 100 million = ______ crores.

Solution:

10

Question 6.

Complete the table by writing the period, place and place value of the encircled digit. Look carefully at the commas between periods before you answer the question. The first one is done for you.

Solution:

Question 7.

Form the smallest 8-digit number using the digits 7, 5, 0, 1, 2, 9, 8, and 4. Also, write the number name of the numeral formed both in the Indian System and in the International System.

Solution:

10245789

1,02,45,789 – One crore two lakh forty five thousand seven hundred eighty nine.

10,245,789 – Ten million two hundred forty five thousand seven hundred eighty nine.

Question 8.

Write the successor (1 more) of the following:

(a) 48,36,959

Solution:

48,36,960

(b) 9,99,99,999

Solution:

10,00,00,000

(c) 56,09,999

Solution:

56,10,000

Question 9.

Write the predecessor (1 less) of the following:

(a) 56,43,000

Solution:

56,42,999

(b) 10,00,00,000

Solution:

9,99,99,999

(c) 4,84,10,000

Solution:

4,84,09,999

Question 10.

Find the sum of the place values of two fives in 35,46,52,983.

Solution:

Additional Questions:

Question 1.

Rewrite the following numerals using commas in the Indian System of numeration.

(a) 5700037

Solution:

57,00,037

(b) 1010057

Solution:

10,10,057

(c) 78536110

Solution:

7,85,36,110

(d) 89001335

Solution:

8,90,01,335

(e) 374011799

Solution:

37,40,11,799

(f) 62789760

Solution:

6,27,89,760

Question 2.

Write the number name according to the Indian place value chart.

(a) 76,58,00,740

Solution:

Seventy six crore fifty eight lakh seven hundred forty.

(b) 86,52,34,143

Solution:

Eighty six crore fifty two lakh thirty four thousand one hundred forty three.

(c) 56,36,20,120

Solution:

Fifty six crore thirty six lakh twenty thousand one hundred twenty.

(d) 40,23,12,700

Solution:

Forty crore twenty three lakh twelve thousand seven hundred.

(e) 52,30,123

Solution:

Fifty two lakh thirty thousand one hundred twenty three.

(f) 9,23,52,005

Solution:

Nine crore twenty three lakh fifty two thousand five.

Question 3.

Rewrite the following numerals using commas in the International System of Numeration.

(i) 570133

(ii) 57637123

(iii) 112340125

(iv) 76000035

Solution:

(i) 570,133

(ii) 57,637,123

(iii) 112,340,125

(iv) 76,000,035

Question 4.

Write the number names for the following numerals in the International System of Numeration.

(i) 371,041,001

Solution:

Three hundred seventy one million forty one thousand one.

(ii) 7,133,940

Solution:

Seven million one hundred thirty three thousand nine hundred forty.

(iii) 803,746

Solution:

Eight hundred three thousand seven hundred forty six.

(iv) 55,320,821

Solution:

Fifty five million three hundred twenty thousand eight hundred twenty one.

Question 5.

Fill in the blanks.

(i) 10 lakhs = _____ million.

Solution:

1

(ii) ______ chart is followed by most of the countries of the world.

Solution:

International Place Value

(iii) 10 ten thousands = ______ lakh.

Solution:

1

(iv) 10 crores = ______ crore.

Solution:

1 ten

(v) The predecessor of 10,00,00,000 (ten crore) is _________

Solution:

9,99,99,999

Question 6.

The place value of 8 in the number 586,231 is

(i) Thousand

(ii) Lakh

(iii) Ten thousand

(iv) Hundred

Solution:

(iii) Ten thousand

Question 7.

The successor of 25,78,199 is

(i) 25,78,300

(ii) 25,78,200

(iii) 25,78,100

(iv) 25,78,101

Solution:

(ii) 25,78,200

Question 8.

80 million = ______ crores.

(i) 8

(ii) 80

(iii) 800

(iv) 0.8

Solution:

(i) 8

Question 9.

The digit at the hundred million places in the number 856,730,430 is

(i) 6

(ii) 5

(iii) 8

(iv) 1

Solution:

(iii) 8

Question 10.

Form the smallest 6-digit number using 7, 4, 6, 9, 0, and 1. Also, write the number name in the Indian system.

Solution:

1,04,679

One lakh four thousand six hundred seventy nine.

Question 11.

Form the largest 8-digit number using 3, 5, 9, 0, 7, 8, 4 and 6. Also, write the number name in the International system.

Solution:

98,765,430

Ninety eight million seven hundred sixty five thousand four hundred thirty.

Question 12.

Find the sum of place values of two sixes in 36,40,42,632.

Solution:

6,00,00,000; 600

Their sum is 6,00,00,600.

Question 13.

Look carefully at the commas between periods and then write the number names for the following:

(a) 20,17,311

Solution:

Twenty lakh seventeen thousand three hundred eleven.

(b) 36,140,003

Solution:

Thirty six million one hundred forty thousand three.

(c) 8,01,339

Solution:

Eight lakh one thousand three hundred thirty nine.

(d) 352,170,196

Solution:

Three hundred fifty two million one hundred one hundred seventy thousand one hundred ninety six.

(e) 59,39,26,103

Solution:

Fifty nine crore thirty nine lakh twenty six thousand one hundred three.