1.11 “I can explain how place value is related to addition and subtraction of decimals.”

Why is this important? Money Shopping Paycheck Can anyone think of times in their life when they would need to know how to add and subtract decimals?

Vocabulary Place Value - The _____________ assigned to the place that a ________ occupies in a number. Ex. 32,849 Increase - to go _____ , add. To make a number ___________. Decrease - to go _______, subtract. To make a number ___________. Digit - is a number.

Place Value 4,259,367.180467

Rules 34.67 - 3.55 Align the _________ Align the __________ Bring the decimal _______ _________ Then Add or Subtract 34.67 - 3.55

Example 22.48 + 3.02 Explain: I added the 8 and 2 because they are both in the hundredths. I added the 4 and 0 because they are both in the tenths place. I added the numbers 2 and 3 because they are both in the ones place. I just brought the two down in the tens place.

Practice :) 82.78 + 10.02 = a A. 93.22 B. 92.80 C. 92.00 34.88 - 32.7 = n A. 1.16 B. 2.1 C. 2.18

Question? Tiffany has $34.99. She went to the store and bought a robe for $23.28. She also bought a pair of slippers for $9. 56. How much money will Tiffany have left? A. $2.15 B. $32.84 C. $5.71 D. $4.22

Practice Order Decimals

What did we learn today? List