1. 5 Minute Math Review 1..65 +.3= 2..65 +.4= 3..65 +.05= 4. Solve 2/5 x 1/6= 5. Order these decimals from greatest to least 2.480.411.360.7 0.1

2. Adding & Subtracting Decimals Ob jective: Today we will estimate sums and differences of decimal numbers, use representations to add tenths, hundredths, and thousandths through reasoning and representation.

3. The Jeweler’s Gold I n your small groups, do the following: 1. Answer the question below. Everyone should agree on what the answer is. 2. Create a poster showing your answer, and explain how you added the numbers together. Janet is a jeweler. When she makes new jewelry or redesigns jewelry, she is often left with small pieces of gold. At the end of one day of work, Janet had pieces of gold that weighed 0.3 gram, 1.14 grams, and 0.085 gram. How much gold did Janet have left? 0.085 1.14 0.3 Jeweler’s Gold Session 2.2 | Unit 6 Instructions Tap the first button to reveal the numbers. Tap the second button to reveal The Jeweler’s Gold problem.

4. Let's Practice Adding Decimals: In your notebook please solve the following problems. ** Remember when adding decimals, make sure you line up the decimals.*** 1.17.14 + 1.89_____________ 2. 5 + 0.6 + 2.58_____________ 3. 0.45 + 0.8_____________ 4. 259.25 + 7,893.2_____________

5. Subtracting Decimals: - It's the process is the same as adding, but you need to subtract. - Representation Example Ex..75 -.32= - Line up the decimals example Ex..75 -.32=

6. Let's Practice Subtracting Decimals: In your notebook find the difference for each problem and show your work clearly. 1..89 -.04= 2. 5.47 - 2.31= 3.1.42 -.91= 4..841 -.493= 5. 29.478 - 3.74=