Whole Numbers

1
Chapter 1

• Whole Numbers

2
Numbers

• Natural s 1,2,3,4,5
• 3 dots goes on FOREVER!
• Sometimes called counting numbers
• Whole s 0,1,2,3,4
• Number Line smallerleft largerright

1
2
3
4
3
4
3
Inequalities

• gt Greater than
• 8 gt 5
• Number line
• lt Less than
• 4 lt 7
• Number line

4
Names of Places

• MillionsgtHundred-thousands
• ten-thousandsgtthousands
• hundredsgttensgtones
• Four hundred six thousand nine in standard form
• 406,009

5
U Try It

• Graph 4, 0, 9 on a number line
• Place lt or gt between the two numbers
• 89 76
• 45 56
• Write 46,032,715 in words

6
Rounding

• Round to the nearest place value or estimating
• At first you will be told which place value to
  round.
• Look to the value to the right of the value you
  will round. If it is 5 or greater, round up. If
  4 or less, the value stays the same.

7
Examples a plenty

• Round 445,789 to the nearest thousand
• Hint look at the seven
• 446,000
• Round 873,231 to the nearest ten-thousand
• Round 85 to the nearest ten.

8
1.1 Homework

• 1 thru 107 Every Other Odd
• Problems 4, 12, 26, 34, 42, 52, 68, 80, 90, 98

Copying is not! Get your own peanuts!
Working Together and sharing ideas is Great!
9
1.2 Adding and Subtracting

• Vertically
• Line up the numbers by place value
• Example 123 89
• The many words for sum
• Added to
• More than
• The sum of
• Increased by
• The total of
• plus

10
Carrying

• When you are adding numbers in a column and the
  sum exceeds 9.
• 957 678
• 399 712

11
Unknowns

• Variable a letter that stands for a number.
• Variable expression variables linked together
  mathematically
• Evaluating the variable expression plugging in
  numbers for the variables and solving

12
Examples

• Evaluate K P L when
• K 7, P 1, L 4

13
Properties

• Addition property of zero
• If you add zero to it, it stays the same
• Commutative property of addition
• XY YX
• 15 51
• Associative Property of addition
• (ab)c a (bc)
• (48)1 4 (81)

14
Equations

• Equation has numbers and/or variables on both
  the right and left side of an equals sign
• Solution substituting numbers for variables in
  an equation that makes the equation true or
  false.

15
Examples

• X815
• Is it true or false when x 6
• xyz11,521
• Is this equation true or false when x1692,
  y4783, z5046

16
Subtraction

• Vertically line up the numbers as in addition.
• The many words for subtract
• Minus
• Less
• Less than
• The difference between
• Decreased by
• Subtractfrom

17
Borrowing (not just a nice word for stealing)

• You may need to borrow if the lower number is
  bigger than the upper number.
• Example Subtract 692 378
• Ex2 Subtract 3,904 1,775

18
Geometry

• Point
• Line
• Ray
• Line Segment
• Angle
• Plane
• Intersecting and parallel lines
• Polygons

19
Perimeter

• Add up the sides
• If I wanted to put tape around the edge of my
  snowboard fashioned out of an old ironing board,
  how much tape do I need?

6 Ft
1 ft
2 ft
20
1.2 Homework

• 1 thru 143 EOO
• Problems 6, 20, 42, 48, 52, 58, 66, 82, 100, 118,
  140

Shut up!
Nirzwans homework assignments aren't that bad