5.2 Unit 2 Decimals
names, and expanded form, e.g., 347.392 = 3 × 100 + 4 × 10 + 7 × 1 + 3 × (1/10)
+ 9 × (1/100) + 2 × (1/1000).
place, using >, =, and < symbols to record the results of comparisons.
representations.
Essential Question(s)
Why does placement or position of a number matter? How would you compare decimals to the thousandths? How is addition of decimals different from addition of whole numbers? How is subtraction of decimals different from addition of whole numbers? How do we add decimal numbers? How do we subtract decimal numbers? Why is place value important when adding whole numbers and decimal numbers? How can we use models to demonstrate decimal values? How do you add and subtract decimals using concrete models or drawings and strategies based on place value? |
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