NCTB Class 6 Math Chapter One Exercise 1.1 Solution by Math Expert. Bangladesh Board Class 6 Math Solution Chapter 1 Natural Numbers and Fractions Exercise 1.1 Solution.

Board |
NCTB |

Class |
6 |

Subject |
Mathematics |

Chapter |
1 |

Chapter Name |
Natural Numbers and Fractions |

Exercise |
1.1 Solution |

**Exercise 1.1 Solution**

**(1) (a) Twenty thousand seventy; thirty thousand eight; fifty five thousand for hundred.**

**Solution:- **20,070 ; 30,080 ; 554000

**(b) Four lac five thousand; seven lac two thousand seventy five.**

**Solution:- **4,05000, ; 7,02075

**(c) Seventy six lac nine thousand seventy; Thirty nine hundred four.**

**Solution:- **76,90,07 ; 39,009024

**(d) Five crore three lac two thousand seven.**

**Solution:- **5,03,2007

**(e) Ninety eight crore seven lac five thousand nine.**

**Solution:- **98,7,0,5009

**(f) One hundred two crore five thousand seven hundred eight.**

**Solution:- **102,0005,708

**(g) Nine hundred fifty five crore seven lac ninety.**

**Solution:- **955,074,00090

**(h) There thousand five hundred crore eighty five lac nine hundred twenty one.**

**Solution:- **3,500,085,0921

**(i) Fifty billion three hundred one million five hundred thirty eight thousand **

**Solution:- **

**(2) (a) 45789; 41007; 891071.**

**Solution:- **Forty five thousand seven hundred eighty nine;

Forty one thousand seven

Eight lakh ninety one thousand seventy one.

**(2) (b) 200078; 790678; 890075.**

**Solution:- **Two lakh seventy eight

Seven lakhs ninety thousand six hundred seventy eight.

Eight lakh ninety thousand seventy five.

**(2) (c) 4400785; 6870509; 7105070.**

**Solution:-** Forty four lakh seven hundred eighty five ,

Sixty eight lakh seventy thousand five hundred nine,

Seventy one lakh five thousand seventy.

**(2) (d) 50877003; 94309799; 83900765.**

**Solution:- **Five crore eight lakh seventy seven thousand three.

Nine crore forty three lakhs nine thousand seven hundred ninety nine,

Eight crore thirty nine lakhs seven hundred sixty five.

**(4) Write down the greatest and the smallest numbers consisting of nine digits.**

**Solution:- **Consisting of nine digits the greatest number

= 999999999

Therefore, consisting of nine digits the smallest number

= 100000000.

**(5) From the greatest and the smallest numbers consisting of seven digits using the digits only once:**

**Solution:- **(a) Greatest number = 9854321,

Smallest number = 1234589,

(b) Greatest number = 9875430

Smallest number = 3045789

**(6) Which are the greatest and the smallest numbers consisting of seven digits having 7 in the first and 6 in the last position of the numbers?**

**Solution:- **The greatest and the smallest numbers consisting of seven digits having seven in the first and 6 in position of the numbers are—

G -> 7999996

S -> 7000006

**(7) Express in words the number obtained by arranging the digits of the number 73455 conversely.**

**Solution:- **Fifty five thousand four hundred thirty seven

= 55437.

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