knowing decimals 13.45 4,000 + 500 + 40 + 9 +.8 +.03 307.6 - 56.1 108 ÷.32 19.8 *.32

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Knowing Decimals 13.45 4,000 + 500 + 40 + 9 + .8 + .03 307.6 - 56.1 108 ÷ .32 19.8 * .32

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Page 1: Knowing Decimals 13.45 4,000 + 500 + 40 + 9 +.8 +.03 307.6 - 56.1 108 ÷.32 19.8 *.32

Knowing Decimals

13.45

4,000 + 500 + 40 + 9 + .8 + .03

307.6- 56.1

108 ÷ .32

19.8 * .32

Page 2: Knowing Decimals 13.45 4,000 + 500 + 40 + 9 +.8 +.03 307.6 - 56.1 108 ÷.32 19.8 *.32

Let’s practice our place values!

Page 3: Knowing Decimals 13.45 4,000 + 500 + 40 + 9 +.8 +.03 307.6 - 56.1 108 ÷.32 19.8 *.32

Write 231.367 in word and expanded form.Remember, deal with the numbers before the decimal first.

Two hundred thirty-one and three hundred sixty-seven thousandths.200 +

Let’s practice

30 + 1 + .06 + .007 .3 +

Page 4: Knowing Decimals 13.45 4,000 + 500 + 40 + 9 +.8 +.03 307.6 - 56.1 108 ÷.32 19.8 *.32

Write the following number in standard form:

Nine hundred six and fifty-four ten-thousandths9 0 6 __ __ __ __5 40 0 .

< means “less than.”> means “greater than.”

Page 5: Knowing Decimals 13.45 4,000 + 500 + 40 + 9 +.8 +.03 307.6 - 56.1 108 ÷.32 19.8 *.32

1. Line the numbers up vertically (up and down) by the ones place.

2. Start at the left and compare the digits.3. Move towards the right until you find a

difference.

ADD and SUBTRACT DECIMALSLine up decimals vertically

ORDERING DECIMALS

Page 6: Knowing Decimals 13.45 4,000 + 500 + 40 + 9 +.8 +.03 307.6 - 56.1 108 ÷.32 19.8 *.32

Classwork:

• Play Hotel Decimalfonia to help you add and subtract decimals

• Practice Adding Decimals and Subtracting Decimals from AAA Math

• Complete Adding/Subtracting Decimals worksheet

Homework:Knowing Decimal worksheet