Today we will subtract with decimals. subtract =take away
Decimals=numbers less than zero
Slide 2
If you have $1.00 and you buy an ice cream for $0.50 you would
have $0.50 left. You do this in your head all the time when you buy
items at the store!
Slide 3
Subtract Subtract means take away from something. Example: 4-2=
4 or - =
Slide 4
Decimal A decimal is a number less than 1. For example $0.70
10.50989 $25.50
Slide 5
Importance Why you purchase something in the store, you always
need to know if you received the correct change! It will help you
on any tests that subtracting decimals is on! What would be other
reasons to know how to add numbers with decimals?
Slide 6
Lets try one! 3.58+ 7.41= 8.58 - 7.41 To find the difference,
rewrite numbers so that the decimal point lines up vertically.
Subtract straight down! 711 Bring decimal straight down!.
Slide 7
Lets try one! 39.67+ 21.46= 39.67 - 21.46 To find the
difference, rewrite numbers so that the decimal point lines up
vertically. Subtract straight down! 18 21 Bring decimal straight
down!.
Slide 8
Lets try one! 0.681+ 8.513= 9.681 -8. 513 To find the
difference, rewrite numbers so that the decimal point lines up
vertically. Subtract straight down! 86 1 1 1 Bring decimal straight
down!. 7
Slide 9
1.To find the difference, rewrite numbers so that the decimal
point lines up vertically. 2.Subtract straight down 3.Bring decimal
straight down 30.333 -23.460 6.873
Slide 10
1.To find the difference, rewrite numbers so that the decimal
point lines up vertically. 2.Subtract straight down 3.Bring decimal
straight down 22.181 -19.0949 3.0861
Slide 11
1.To find the difference, rewrite numbers so that the decimal
point lines up vertically. 2.Subtract straight down 3.Bring decimal
straight down 89 -64.8 24.2
Slide 12
Lets review! What does subtract mean? Take away! What is a
decimal? A number less than 1.
