Page 255 - ICSE Math 6

Concepts’ Glimpse

NUMBERS

Indian Place Value Chart Estimation 5,649
Crores Lakhs Thousands Ones
TC C TL L TTh Th T H O To the nearest tens 5,650
93,65,43,625
Ninety-three crore sixty-five lakh forty-three thousand To the nearest hundreds 5,600
six hundred twenty-five
To the nearest thousands 6,000

International Place Value Chart
Billion Million Thousands Ones
HB TB B HM TM M HTh TTh Th H T O Forming Numbers 2 3 5
564,231,705,123
Five hundred sixty-four billion two hundred thirty-one million With repetition 2235, 3525, 2253,
5552, and so on.
of digits
seven hundred five thousand one hundred twenty-three
Without repetition 235, 253, 325,
Face value 7 8 9 of digits 352, 523, 532

Place value 700 80 9 Largest 532
789
Expanded form 7 × 100 + 8 × 10 + 9 × 1 Smallest 235

Number name Seven hundred eighty-nine

NATURAL NUMBERS AND WHOLE NUMBERS

Properties of Whole Numbers

Operation Closure property Commutative property Associative property
‘+’ Yes Yes Yes

‘–’ No No No
‘ ×’ Yes Yes Yes

‘÷’ No No No

Divident = Quotient × Divisor + Remainder

Property of Zero Whole Numbers

a + 0 = 0 + a = a a – 0 = a Additive identity is 0, as a + 0 = 0 + a = a.

a × 0 = 0 × a = 0 0 ÷ a = 0 Multiplicative identity is 1, as a × 1 = 1 × a = a.

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