Math Ch-2 Whole Numbers

13/4/20
Write the below points in notebook than complete Ex. 2.1 from the textbook.

Key Points:

•  The successor is one more than the given number.  All whole numbers have a successor.
• The predecessor is one less than the given number. All whole numbers except 0 has a predecessor.
•  To represent the whole numbers on the line, draw a line and mark a point 0 on it; thereafter mark the points 1, 2, 3, .... such that all the points are equidistant from each other.
• On a number line, we move to the right after the first number in addition and we move to the leftof  the first number in subtraction. Multiplication corresponds to making jumps of equal distancestarting  from zero.

14/4/20
Done explanation of properties of Whole Numbers
Key Points:

•  The sum of two whole numbers is a whole number, similarly the product of two whole numbers is also a whole number. But it does not hold true in subtraction and division.
•  If a, b and c are whole numbers, then
• a. a + b = b + a
• b. a × b = b × a
• c. (a + b) + c = a + (b + c)
• d. (a – b) – c ≠ a – (b – c)
• e. (a × b) × c = a × (b × c)
• f. a × (b + c) = a × b + a × c
• g. a × (b – c) = a × b – a × c
• h. a + 0 = a
• i. a × 0 = 0
• j. a × 1 = a
•  If a is a non zero whole number, then 0 ÷ a = 0 and a ÷ 0 is not defined.
• Division algorithm:Dividend = divisor × quotient + remainder

Homework Q1,Q2 and Q3 of Ex. 2.2 from textbook.

15/4/20
Homework Q5 and Q6 of Ex 2.2 from textbook.

16/4/20 Homework
Do Q4,Q7,Q8 and Q9 of Ex 2.2 from textbook

17/4/20
Done explanation of Pattern of Whole Numbers.
Key Points:

• Patterns in whole numbers are interesting as well as useful in verbal calculations.

 Homework
Do Q10,11,12 and 13 of Ex. 2.2 and Q1,2 and 3 of Ex 2.3 from textbook.

20/4/20
Complete Q1,and Q2 of worksheet of workbook.

21/4/20 Homework k
Complete Q3 and Q4 of workbook.

22/4/20
Complete Review Ex. Q1 to Q7 from textbook.

Notebook work:

Please click on the following link

.Notebook work of ch-Whole Numbers