The Big Idea: This week, we will subtract numbers! Here are the specifics:
- Adding and Subtracting Money
- Adding and Subtracting Decimals with Models (decimal grids)
- Adding and Subtracting Decimals by lining up the numbers (P.U.P = Point Under Point)
- Adding and Subtracting Whole Numbers (numbers without decimals)
- Distinguishing between a subtraction and an addition problem
Helpful Videos
- Adding Decimals with P.U.P. Method
- Adding Multi-Digit Whole Numbers
- Decimal Subtraction Tutorial
- Subtracting Decimals with Word Problems
Songs
- Subtraction Rap Song
- Adding and Subtracting Decimals Song – Line up the dot, and give it all you got!
Extra Practice
- Adding Decimals Soccer Game:
http://www.math-play.com/soccer-math-adding-decimals-game/adding-decimals-soccer-game.html
- Decimal Number Cruncher (Addition):
http://www.coolmath.com/prealgebra/02-decimals/decimals-cruncher/addition
- Addition Power Football Game:
http://www.funbrain.com/cgi-bin/fb.cgi?A1=start1&A2=Superbrain&ALG=No&Submit=Let%27s+Play
- iXL Addition Practice:
- B.1 Add numbers up to millions
- B.2 Add numbers up to millions: word problems
- B.3 Addition: fill in the missing digits
- B.4 Properties of addition
- B.5 Add 3 or more numbers up to millions
- B.6 Addition patterns over increasing place values
- B.7 Choose numbers with a particular sum
- U.1 Add decimal numbers
- Khan Academy Addition Practice:
- Subtracting Decimals Practice with Khan Academy: https://www.khanacademy.org/math/arithmetic-home/arith-review-decimals/sub-decimals/a/subtracting-decimals-without-the-standard-algorithm
- Subtracting Whole Numbers with Khan Academy: https://www.khanacademy.org/math/arithmetic-home/addition-subtraction/regrouping-3-dig/e/subtraction_4
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Subtraction Practice from iXL.com
