Decimals +, -, x, and ÷
Dec. 3 -7 and Dec. 10 - 12
Standard:
Apply and extend previous understandings of decimals to develop and fluently use the standard algorithms for addition, subtraction, multiplication, and division of decimals.
Essential Questions: How can you use estimation to check that your answer is reasonable? What happens to the decimal point when you multiply a whole number by a decimal? When multiplying decimals, how do you know where to place the decimal point in the product? How is dividing a decimal by a whole number similar to dividing a whole number by a whole number? How can you use the base ten blocks to model decimal division?
Vocabulary
Estimation, reasonable, multi-digit, standard algorithm, model, decimal
Number Talks
Error Analysis
IXL Bobcat Objectives
F.7 Round decimals
H.2 Multiply decimals
H.7 Division with decimal quotients
I Can... Decimals
Decimal Place Value
Decimals - Add, Subtract, Multiply, and Divide
Add and Subtract Decimals Activites
Activity #1- Chick-Fil-A Menu Math
2) Show work on the activity paper
3) Turn into basket
Activity #2 - Add and Subtract Decimal Task Cards
Multiply Decimals Activitites
Activity #3 - NBA Basketball Bracket
2) Use paper to multiply your numbers and show work.
3) Staple work and bracket together.
4) Turn into basket
*Find a partner - each person will work on either the Western or Eastern Conference
Activity #4 - Multiplication Connect Four
Divide Decimals Activities
Activity #5 - Divide Decimals Model
Activity #6 - Divide Decimals Word Problems
Add, Subtract, Multiply and Divide Decimal Activites
Activity # 7 - Two Way Decimals - Add/Subtract and Multiply/Divide Puzzles
2) Fill in the missing numbers in each table
3) Turn into basket
Add/Subtract 2 Way Decimal Puzzle
Multiply/Divide 2 Way Decimal Puzzle
Activity #8 - Buzz Math
1) Adding and Subtracting Decimals
2) Multiply Decimals
3) Dividing Decimals
4) Performing Operations with Decimals
May use whiteboard for work.
Activity #9 - Ten Marks
1) Show work on paper and turn into basket
Add/Subtract/Multiply/Divide- Multi - Digit Decimals