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Published byMagdalen Singleton Modified over 6 years ago

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Decimals (Day 1) Place Thousands Hundreds Tens Ones . Tenths Hundredths Thousandths Place Value 1,000 100 10 1 1/10 1/100 1/1000 With whole numbers and decimals, the value of each digit in a decimal is the product of the digit and its place value 8, Digit: 8 Value: 8,000 or .008

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**Decimals (Day 1) Try It: Give the value of each 1: 316.24 587.13**

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Decimals (Day 1) Read 8, 1. Read the whole number: “Eight thousand fifty two” 2. Read the decimal: “and” Read the decimal values (say the last value): “four hundred sixty eight thousandths” 8, = “Eight thousand fifty two and four hundred sixty eight thousandths”

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Decimals (Day 1) Try It: Read: Read: Read: 46,

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**Decimals (Day 1) 3.75 3.90 Compare 3.75 and 3. 9 3.75 < 3.9**

To compare and order decimals, write the numbers with their decimal points lined up. Then compare the digits in each place from left to right. Compare 3.75 and 3. 9 3.75 3.90 3.75 < 3.9

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**Homework: Lesson 3-1 (#31-24)**

Decimals (Day 1) Try It: Use < , > , = to compare each set of numbers. Homework: Lesson 3-1 (#31-24)

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Decimals (Day 2) Before solving an addition or subtraction problem using decimals you may want to estimate a solution using simpler numbers. Example #1: Round to the nearest whole numbers: = 35 Estimation: 35 Example#2: – 32.45 Round to the nearest whole number: – 32 = 36 Estimation: – 36

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**Decimals (Day 2) Adding and Subtracting Decimals:**

Write the numbers with their decimal point lined up. (This lines up the place values) Annex zeros as needed. Add or subtract digits. Place the decimal point in the answer.

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**Decimals (Day 2) Example #3: 9.55 + 8.39 = Estimate: Solve:**

+ 8.39 17.94

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**Decimals (Day 2) Put it all together! Solve: x – 4.5 = 8.6**

n = 37.4 j = 11.3 k – = 3.6 Homework: Lesson 3-3 (#2-38 evens)

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