Mathematics 4th

• Digits are the symbols that go into numbers: 0,1,2,3,4,5,6,7,8, and 9 are digits. 867 is not a digit, but it is made up of three of them (8,6, and 7).
  Place is where a digit is in a number. In 
• Place is where a digit is in a number. In 867, the number 8 is in the hundreds place, 6 is in the tens place, and 7 is in the ones place.
  Place value is how much each digit is worth, based on what place it has in a number. You can find a digit's place value by multiplying it times its place. For example, the 
• Place value is how much each digit is worth, based on what place it has in a number. You can find a digit's place value by multiplying it times its place. For example, the 8 in 867 actually has a place value of 800 (or 8×100), since it's in the hundreds place. Similarly, 7 in 867 just have a place value of 7, since it's in the ones place (7×1).
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How to Read Large Numbers

• Numbers are separated into groups: ones, tens, hundreds, thousands, millions, and so on. Each group contains three subgroups: ones, tens, and hundreds. When writing or reading a large number, begin at the left with the largest group, and proceed to the right. For instance, 7,482 is read as seven thousand, four hundred, eighty-two. The following chart can help in reading large numbers.
  
  How to Compare Two Numbers?
  When we compare two numbers, there are three possibilities:

  ·         The first number is greater than the second (4 > 2).

  ·         The second number is greater than the first (2 < 3)

  ·         The two numbers are equal (6 = 6)

• Example: Which number is smaller, 246 738 or 246 951?

  Solution: Line up the digits.
  

  Compare the digits starting from the left. Find the first place that they differ In this example, the digits in the hundreds place are not the same.7 is smaller than 9.

  So, 246 738 is smaller than 246 951.

   Ascending and Descending order:

  In general terms, Ascending means smallest to largest, 0 to 9, and/or A to Z and Descending means largest to smallest, 9 to 0, and/or Z to A.
  Ascending order means the smallest or first or earliest in the order will appear at the top of the list:

  ·              For numbers or amounts, the sort is smallest to largest. Lower numbers or amounts will be at the top of the list.

  Descending order means the largest or last in the order will appear at the top of the list:

  ·              For numbers or amounts, the sort is largest to smallest. Higher numbers or amounts will be at the top of the list.

• Compare the digits starting from the left. Find the first place that they differ In this example, the digits in the hundreds place are not the same.7 is smaller than 9.

• Example: Arrange the following numbers in increasing order 425 876, 425 987, 425 856
  Solution: Line up the numbers vertically

  Compare the digits starting from the left.

  Arranging the numbers in increasing order, we get

  425 856,          425 876,         425 987
  
  

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What is the place value of the 6 in the given number? (45,806,391)
a) Million
b) Thousand (6,000)
c) Ten
d) Hundred thousand

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In the previous question what is the place value of 4. (45,806,391)
a) Hundred thousand
b) Million
c) Ten Million (40,000,000)
d) hundreds

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……….is the smallest 9 digit number.
a) 999,999,999
b) 100,000,000
c) 777,777,777
d) 110,000,000

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1)                  Write the place value of the underlined digit in the given number? (29,231,100)

A.                 900,000

B.                 9,000,000

C.                 90,000,000

D.                 900,000,000

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                   Select the correct number of the given numerals. (One hundred eighty-four thousand three)

A.                 184,3

B.                 184,03

C.                 184,003

D.                 1,840,003

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